89-89-60-021-TF Rev F LS3-L99 Chevrolet Camaro

Installation Instructions for:
LS3/L99 Chevrolet Camaro
Step-by-step instructions for installing the best in
supercharger systems.
Your MAGNA CHARGER intercooler kit
is sensitive to corrosion!
Take care of if by using 50/50
anti-freeze with de-ionized water.
89-89-60-021-TF Rev F
Magnuson Products Inc
1990 Knoll Drive, Ventura, CA. 93003
(805) 289-0044 * (805) 677-4897 fax
magnusonproducts.com * magnacharger.com
Magna Charger
GM 6.2L Engine
LS3/L99 Chevrolet Camaro
Please take a few moments to review this manual thoroughly before you begin work: Make a quick parts check
to make certain your kit is complete (see shipper parts list in this package). If you discover shipping damage or
shortage, please call our office immediately. Take a look at exactly what you are going to need in terms of tools,
time, and experience. Review our limited warranty with care. When unpacking the supercharger kit DO NOT lift the
supercharger assembly by the black plastic bypass actuator. This is pre-set from the factory and can be altered if used
as a lifting point!
Caution: Relieve the fuel system pressure before servicing fuel system components in order to reduce the risk of fire
and personal injury. After relieving the system pressure, a small amount of fuel may be released when servicing the
fuel lines or connections. In order to reduce the risk of personal injury, cover the regulator and fuel line fittings with a
shop towel before disconnecting. This will catch any fuel that may leak out. Place the towel in an approved container
when the job is complete. Use only premium fuel, 91 octane or better.
Magna Charger systems are manufactured to produce about 20 RWHP per pound of boost at sea level. High altitudes
will produce different numbers.
Our Magna Charger kits are designed for engines in good mechanical condition only. Installation on high mileage
or damaged engines is not recommended and may result in engine failure, for which we are not responsible. Magna
Charger is not responsible for the engine or consequential damages.
Aftermarket engine recalibration devices that modify fuel and spark curve (including, but not limited to programmers)
are not recommended and may cause engine damage or failure. Use of non-Magna Charger approved programming
will void all warranties. If you have any questions, call us.
After you finish your installation and road test your vehicle, please fill out and mail in the limited warranty card, so we
can add you to our files (this is important for your protection).
A new GM fuel filter is recommended at the time of supercharger installation
Stock spark plugs and stock plug gap is recommended
Drive belt = Gates# K060947
Tools Required:
Metric wrench set
¼” - 3/8” and ½” drive metric socket set (Standard & Deep)
3/8”and ½” drive Foot pound and inch pound torque wrenches
Phillips and flat head screwdrivers
Fuel line quick disconnect tools (included in kit)
Small or angled 3/8” drill motor
Contact information:
Drain pan
Magnuson Products Inc
Hose cutters
Magna Charger Division
Hose clamp pliers
1990 Knoll Drive
Safety glasses
Ventura, CA 93003
Metric Allen socket set 3/8” drive
Sales/Tech support 805-289-0044
Shop vacuum cleaner
Helpful Tool: Air or electric impact wrench.
LS3 L99 Camaro
The first step is to reprogram the vehicle
computer to allow it to function correctly with
your new MagnaCharger Supercharger. Follow
the instructions in the supplied SCT tuner manual. Locate your EO sticker and follow the instructions for placing the sticker on the supercharger.
The battery is located beneath the floor of
the trunk. The first step is to remove the carpet
covering the access panel.
Unscrew and remove the large wing-nut
in the center of the panel.
Pull up on the access panel to remove.
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LS3 L99 Camaro
Pull up on the Styrofoam mount support
and tire compressor to remove from the vehicle.
Put these parts aside for later reinstallation.
Use a 10mm wrench to loosen and then
disconnect the negative (-) battery cable at the
Slowly remove the gas cap to release fuel
system pressure.
Remove the engine cover by lifting and
put aside. This can be modified, should you
wish by utilizing the side panels over the rocker
covers, but will not be reused in this configuration.
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LS3 L99 Camaro
Place a clean drain pan under the driver
side front of the car. Near the driver side main
frame rail is the radiator petcock drain valve with
a down spout to drain. Twist the valve to start
the flow, drain the coolant into the clean pan and
put aside for later use.
Coolant Drain Petcock
Remove the radiator cap to facilitate
draining. When the radiator is drained, reset the
petcock valve to shut, and replace the radiator
Pull the passenger side vent tube off at
the plastic box between the throttle body and the
intake air box.
Use an 8mm wrench to loosen the clamps
at the air box and throttle body.
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LS3 L99 Camaro
Pull the loosened air inlet tube free from
the vehicle, this will not be reused.
Rotate the passenger side vent tube removed from the air inlet in step #11 to expose
the release tab. This will be at the front of the
passenger side valve cover adjacent to the oil fill
spout. Spread the tab to release from the hose
barb and remove the hose. This will not be reused.
PCV Hose barb
Remove the pinch clamps on the heater
hoses from the water-pump hose barbs and pull
the hoses free from the water pump.
Tuck the hoses over the brake module
and out of the way, be aware of residual fluid
that may be inside the hoses.
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LS3 L99 Camaro
Disconnect the EVAP solenoid electrical
EVAP Solenoid
Disconnect the MAP sensor electrical
connector at the sensor on the OEM intake manifold.
Unplug the eight fuel injector connections.
Unplug the electronic throttle body connection.
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LS3 L99 Camaro
Pull the wire loom anchors free from the
mounting holes on the OEM fuel rails on both
sides of the engine.
Press on the light tabs of the EVAP line to
release the clips from the EVAP solenoid and the
Throttle Body. Put aside for later modification.
Unplug the remaining EVAP hose that
goes from the sensor to the hard-line fitting on
the passenger side. Tuck aside near the brake
module for later reinstall.
LS3 Engines: Unplug the PCV hose from
the OEM manifold to the valley cover. This is a
short “U” loop and will not be reused. L99 Engines: This hose goes from the OEM manifold
back to the hose barb at the rear of the driver
sided valve cover and will also not be reused.
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Hose barbs
LS3 L99 Camaro
LS3 Engines: Disconnect the vacuum
brake booster valve from the canister. It will be
more out of the way if you swivel this hose behind the intake toward the passenger side of the
engine. L99 Engines: Disconnect the hose from
the sensor at the brake booster valve using a
pair of pliers on the existing clamp.
Pry the retaining clip off the fuel line at
the passenger side of the vehicle just below the
brake module. Put this clip aside for later installation.
Use the provided fuel line removal tool to
release the fuel line from the hard-line barb. The
proper way to do this is to press the line into the
fitting first, insert the tool and while the line is
pressed in, push the tool into the fitting. Then
pull the line free from the hose barb. If you have,
or can improvise, we suggest that you cap both
the hard-line barb and the fuel line.
Remove the engine cover hold down
bracket using a 10mm wrench on the driver side
near the end of the fuel rail. Then pivot the hold
down bracket up and pull free from the engine.
This will not be reused.
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LS3 L99 Camaro
Unbolt the OEM intake manifold by removing the ten intake manifold bolts using an
8mm socket wrench; there are five on each side.
Carefully lift the OEM intake manifold assembly from the vehicle. Put aside for the moment, we will be using some components later.
Vacuum off the valley cover to ensure that
no debris enters the ports.
Wipe off the heads with some alcohol or
suitable solvent to eliminate any oils or residue
that may have collected.
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LS3 L99 Camaro
Cover the intake ports with tape to maintain a clean environment. It’s important to keep
your work surfaces clean, avoid contamination,
or any debris falling into the exposed engine interior.
Unplug the MAF connector from the front
of the OEM air box on the driver side.
Release the two clips on the air-box cov-
Rotate the air-box cover up and away
from the clips, remove the filter and put both the
filter and the cover aside for later reinstallation.
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LS3 L99 Camaro
Release the two main upper radiator hose
clamps and pull the two ends off of the engine
barb and the radiator barb respectively. Leave
the “T” fitting intact, twist and tuck the hose leaving the “T” connected between the power steering pump and the OEM air box.
Disconnect the overflow hose from the
radiator fill spout, pull free from the mounting
clamps and wrap up around the overflow bottle
cap out of the way.
Disconnect the steam vent hose from the
radiator fill spout, and tuck this behind the power
steering pump.
Unplug the fan shroud connection.
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LS3 L99 Camaro
Use a 13mm socket to remove the two
bolts holding the top of the fan shroud to the radiator.
Carefully lift the fan shroud assembly from
the vehicle and put aside for later reinstallation.
Using a 24mm socket and an impact
wrench, remove the Main Harmonic Balancer
bolt. This will not be reused. Sometimes using
a heat gun or MAP gas torch on the surrounding pulley material helps it to break free from the
Loctite used during initial installation. Don’t heat
the bolt itself and always use care using open
flame around engine compartments and combustible material.
Install the supplied drill guide using the
supplied bolt. Torque the bolt to 30 ft-lbs using
a 24mm socket and torque wrench. Verify your
torque wrench settings.
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LS3 L99 Camaro
Using a small or angled 3/8” drill and the
supplied drill bit, insert the drill into the two guide
holes and drill to the second step of the drill bit.
Be sure that you drill all the way to the second
step, and use with suitable cutting oil. (Caution:
Wear safety glasses)
Using compressed air, blow the drill shavings out of the holes. (Caution: Wear safety
glasses, and make sure that debris doesn’t blow
into surrounding openings…such as the waterpump barb etc.)
Insert the supplied reamer into the drill,
and using a small amount of oil, ream the holes
clean until reamer bottoms out in the holes.
(Caution: Wear safety glasses)
Using a 24mm socket, remove the large
bolt and drill guide from the engine.
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LS3 L99 Camaro
Once again, use compressed air to blow
out the holes. (Caution: Wear safety glasses
and again be aware of surrounding openings.)
Insert the two supplied hardened roll pins
into the drilled holes.
Roll Pins
The use of a small hammer and punch
may be necessary to tap the pins in. Make sure
that the pins are in far enough that they do NOT
touch the balancer bolt.
Install the new supplied factory GM Harmonic Balancer bolt.
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LS3 L99 Camaro
Using a 24mm socket tighten the new
Harmonic Balancer bolt according to General
Motors specifications. Tighten to 50 N-m (37
ft/lbs) then tighten an additional 140° using a
torque angle meter.
Using a 15mm socket on the Tensioner
Pulley bolt, spring the pulley down to remove
tension on the drive belt and remove the belt
when tension has been released.
Unplug the oil pressure sensor from the
back, driver-side of the OEM valley cover.
Remove the oil pressure sensor from the
valley cover using a 6-point 1-1/16” socket or
wrench, put aside for later re-installation. NOTE:
L-99 cars or cars with Displacement On Demand
(D.O.D.) will retain D.O.D. valley cover, skip to
step #62. Damage to engine may occur if MagnaCharger valley cover is installed on D.O.D.
equipped vehicles.
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LS3 L99 Camaro
Remove the eleven valley cover bolts using a 13mm socket and set aside.
Remove the OEM valley cover. This will
not be reused, but we will need components.
Verify the integrity of the existing valley
cover gasket, and that it is correctly positioned
on the valley surface.
Remove the existing O-ring seals from
the OEM valley cover, and place in the O-ring
grooves of the new provided valley cover.
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LS3 L99 Camaro
Install the new valley cover using the eleven provided Allen-countersunk bolts. Torque to
18 ft. lbs using a 5mm Allen socket. Verify your
torque wrench settings.
The secondary locking clip on your 2009
(+) oil pressure sensor connector may cause interference with the supercharger assembly. If
you have previously removed the sensor, you
should wrap the sensors threads with teflon tape
or paste before reinstalling. If the secondary
locking clip is not in position #1, you will need to
reclock it (rotate). If the secondary locking clip
lands in position #2, you may increase the installation torque to rotate into position #1. You
should not have to exceed 24 ft-lbs.
If the secondary locking clip lands in position #3, you will need to remove the sensor and
reclock it using the supplied copper shim. Before reinstalling, wrap the sensor’s threads with
teflon tape or teflon paste. Reinstall the sensor
and shim into position #1 by torquing to 15 ft-lbs
minimum to 24 ft-lbs maximum.
Place a dab of some black silicone into
the recesses of the top surface of the new valley
cover to hold the six provided O-rings in place.
NOTE: If your vehicle is L-99 or D.O.D., skip to
step 70.
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LS3 L99 Camaro
Insert the six provided O-rings into place
on the top surface recesses of the new valley
Replace the oil pressure sensor plug and
locking clip on the oil pressure sensor.
NOTE: If you have a convertible Camaro,
the next four steps are required. The convertible
model has some minor frame stiffening modifications. One of these is an additional “A- frame”
type brace to the upper, fascia cross frame. Remove the two top bolts of this “A” frame brace
using a 12mm wrench.
Loosen the 13mm bolts securing the bottom of the “A-frame” member to the frame rails
on each side of the vehicle.
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LS3 L99 Camaro
The heat exchanger (LTR-being installed
in the upcoming steps) will be shifting about ¾”
toward the passenger side of the vehicle. The air
deflector will need to be modified slightly to create access for the heat exchanger hose barbs.
The existing notches will need to be increased
about ¾” toward the passenger side of the vehicle on each side of the air deflector as shown
by this driver side tape application.
Once your notches are complete, reconnect the top “A-frame” bracket using the provided longer bolts, incorporating the provided spacer between the “A-frame” and the upper cross
frame fascia support. Tighten all your bolts and
torque to 40 ft-lbs. Verify your torque wrench
NOTE: All vehicles continue from here:
Remove the two upper radiator mounting bolts
using a 10mm socket wrench.
Remove the two upper radiator mounting
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LS3 L99 Camaro
Pry off the rubber deflector strip from the
top/front of the radiator. Put these parts aside for
later reinstallation.
These are the heat exchanger components.
Cut the strip of the supplied adhesive
backed foam in half
Cut two strips of the supplied adhesive
backed rubber to fit the upper mounting angles
of the heat exchanger. These will butt up against
the heat exchanger and wrap around the inside
edge of the angle.
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LS3 L99 Camaro
Attach the adhesive backed rubber to the
mounting angles as shown.
Attach one strip of the adhesive backed
foam to the inside-upper edge of the heat exchanger, overlapping the rubber strips as shown.
Attach the other strip to the inside-bottom
edge of the heat exchanger as shown.
Cut 1-3/4” off the short angle of the ¾”
x 4” x 60” x 90° angle hose. Use the supplied
spring hose clamps to attach the short end to the
passenger side barb of the heat exchanger. This
hose will angle directly outward from the heat exchanger as shown. With the mounting angles
pointing down, this will be the left hose barb.
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LS3 L99 Camaro
Cut 1-3/4” off the short angle of the ¾”
x 4” x 36” x 90° angle hose. Use the supplied
spring hose clamp to attach the short end of the
hose to the remaining hose barb of the heat exchanger. This hose will also be pointing outward
as shown.
There are two rectangular holes in the
splash shield just forward of the radiator, one on
the passenger side and one on the driver side.
These holes correspond with the hose barbs
of the intercooler heat exchanger. This picture
shows the passenger side location.
With the help of an assistant, guide the
two hoses through these holes. From below
pull on these hoses while the assistant holds
the radiator pushed back and guides the heat
exchanger down in front of the existing radiator
and AC condenser assembly.
Guide the “hooks” of the intercooler heat
exchanger over the top of the AC Condenser.
Ensure that the foam is between the two (both
top and bottom), and the rubber strips are still in
place around the “hooks”.
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LS3 L99 Camaro
Replace the air deflector strip.
Reinstall the upper radiator clamps using
the stock hardware and a 10mm wrench. Tighten securely.
With the radiator mounted back in the
stock location, use a 13mm wrench and the stock
hardware to re-install the electric fan shroud assembly.
Plug the electrical connection back into
the fan shroud assembly.
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LS3 L99 Camaro
Uncoil the coolant overflow from the reservoir bottle, and relocate through the stock clip
locations. Re-connect the coolant overflow hose
back onto the hose barb on the radiator neck.
Reconnect the steam vent hose to the
barb at the side of the radiator neck; place the
stock clamp back in position.
Pull the radiator upper hose from between the PS pump and air box, and relocate to
the stock barbs on the water pump and radiator,
re-attach the hose clamps to secure the hose to
the hose barbs.
This is the provided Electronic Throttle
control (ETC) connector extension harness.
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LS3 L99 Camaro
Locate the ETC connector on the OEM
engine harness. Plug the extension harness into
the existing ETC connector and route adjacent
to the steam pipe to the driver side of the engine.
Disconnect the main coil connectors from
the center of the coil rails on both sides of the
Disconnect all plug wires from the coils on
both sides of the engine.
Use a 10mm wrench to remove the five
bolts from the coil brackets on each side of the
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LS3 L99 Camaro
Remove the coil brackets from the mounts
on the rocker covers on both sides and put on a
bench for some required modifications.
The plastic wire loom covers from the coil
bracket assemblies must be removed. Unsnap
the connecting clips and remove from both sets
of coil brackets.
In steps 15-16 you disconnected the
heater hoses from the water pump and tucked
them out of the way. Now squeeze the clamps
and remove these hoses from the hose barbs at
the firewall. Remove the clamps from the hose
ends, they will be reused, but the hoses will not.
The hose clamps may be glued onto the hoses…now is a good time to practice that patience
you’ve been working on.
100. Cut the supplied 5/8” hose into a 34”
length, and the supplied 3/4” hose into a 35”
length if they are not already sized correctly.
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LS3 L99 Camaro
101. Take the 34” x 5/8” hose and use one of
the clamps removed to attach the hose to the
smaller barb at the water-pump. Route the other
end up between the oil fill spout and dipstick.
Use one of the removed clamps to connect the
hose to the smaller barb (outside) on the firewall.
102. Use the 35” x 3/4” hose and the removed
clamps to attach to the remaining barb on the
water-pump. Route the other end parallel to the
just installed hose and connect to the remaining hose barb at the firewall using one of the removed clamps.
103. Cut two pieces of the supplied split loom
to cover these hoses as they pass by the existing fuse center mounting platform and over the
valve covers.
104. Remove the MAP sensor from the OEM
intake manifold using a T-25 Torx wrench.
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LS3 L99 Camaro
105. Use a 10mm socket wrench to unbolt and
remove the throttle body from the OEM intake
106. Remove the O-ring from the stock throttle
body connector groove.
107. Remove the brake booster valve from the
hose coming from the OEM intake manifold.
108. Install the O-ring just removed from the
manifold into the groove on the supercharger inlet.
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LS3 L99 Camaro
109. Install the OEM throttle body onto the supercharger inlet using a 10mm socket wrench.
Torque the bolts to 106 in-lbs. Make sure you
are using the correct settings on your torque
110. Press the MAP sensor removed in step
100 into the sensor hole adjacent to the last intake manifold mounting bolt hole (on the passenger side of the supercharger assembly). There
are three intake manifold bolts not pre-installed
with split loom spacers. IMPORTANT: USE THE
a 1” piece of the split loom provided, and slide it
onto this bolt to hold this bolt up a bit. Drop the
bolt down through the MAP sensor.
111. Snap the supplied intake manifold gaskets onto the new Supercharger intake manifold.
112. Using the provided Lubriplate lubricant,
lube the fuel manifold O-ring and insert it into the
groove on the passenger side fuel rail.
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LS3 L99 Camaro
113. Install the fuel supply manifold on the fuel
rail and torque to 106 in-lbs. Verify your torque
wrench settings.
114. Remove the tape from the heads and lubricate with silicone spray, mildly soapy water
spray, or a suitable lubricant (non-petroleum
based-to allow some sliding movement), get
an assistant to help, and carefully lift the supercharger assembly into the engine.
115. Remove the split loom spacers from the
pre-installed manifold bolts and after an initial
hand tighten using a 10mm socket, torque the
bolts down to 106 in-lbs using a cross rotation
pattern. Make sure to verify your torque wrench
116. Attach the supplied MAP sensor extension harness to the existing MAP plug.
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LS3 L99 Camaro
117. Plug the other end of the extension harness into the MAP sensor located under the rear
fuel rail cross-over tube at the back of the passenger side of the engine.
118. Plug in the fuel injector connections to
the injectors on each side of the engine. Make
sure to route and stuff the wiring to avoid moving
119. Re-mount the modified coil brackets to
each side of the engine using the stock hardware. Torque all bolts to 106 in-lbs. Verify your
torque wrench settings.
120. Plug in the main coil connectors on both
sides of the engine.
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LS3 L99 Camaro
121. Attach the stock plug connectors back
onto the coils on the coil brackets on both sides
of the engine.
122. Plug in the electronic throttle body connection on the driver side of the throttle body.
123. Attach the supplied fuel line between the
fuel supply barb below the ABS Module (where
the OEM fuel line was disconnected in steps #
26-27) and the new fuel rail manifold on the passenger side of the vehicle. Pull firmly on both
ends to verify that you have a good connection.
The EVAP sensor tube should be under the fuel
line and above the heater hoses. IMPORTANT:
You should NOT be able to remove the fuel line
from either end without the use of the fuel line
removal tool.
124. Remove the fuel line safety clip from the
fuel line still attached to the OEM intake manifold. Use this and the clip removed in step #26
to re-attach fuel line safety clips on both ends of
the fuel line.
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LS3 L99 Camaro
125. Plug in the EVAP solenoid electrical connection at the front of the passenger side valve
126. Plug in the 90° fitting of the EVAP tube
(from the hard-line on the passenger side running over the heater hoses) to the upper EVAP
solenoid barb.
127. Use a sharp blade and carefully split the
end of the EVAP tube (removed in step #22) to
salvage the 90° fitting.
128. Cut a 15” piece of the supplied 5/16” hose
and install the right angle fitting just removed on
one end.
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LS3 L99 Camaro
129. Connect the 90° fitting to the bottom barb
of the EVAP solenoid. Route the other end over
the jack shaft to the hose barb on the Supercharger inlet on the passenger side of the engine, again no clamp is necessary.
130. On the driver side of the engine, at the
rear of the valve cover, adjacent to the fuel rail
crossover and the coil bracket is a PCV hose
barb covered with a cap. Remove this cap.
NOTE: L-99 or D.O.D. vehicles will not have this
cap and instead will have a PCV hose connection here.
131. Cut a section of the 3/8” hose to 22” in
length. Plug one end of this hose on this PCV
valve barb just uncovered.
132. Route this hose along the fuel rail forward
to the closest barb on the driver side of the Supercharger inlet.
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LS3 L99 Camaro
133. Cut a section of the supplied 11/32” brake
hose to 30” in length. Attach the OEM check
valve removed in step #107 to one end of this
hose. NOTE: L-99 or D.O.D. cars; brake booster will have a sensor in place of the check valve.
Install the hose onto the sensor instead. Sensor
was removed from booster for ease of installation and photograph.
134. Depending on the car, install the check
valve or sensor with hose at the brake booster
as shown. Route the hose laterally toward the
engine and turn it forward to parallel the PCV
hose just installed.
135. Route the hose just below the PCV hose
between the fuel rails and coil bracket and attach the loose end to the front barb on the Supercharger inlet.
136. Tie the PCV, Brake Booster, and Bypass
hoses together loosely with a zip tie as shown.
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LS3 L99 Camaro
137. Add a zip tie to loosely tie the brake booster hose and the PCV hose together where they
meet at the rear of the engine.
138. On the passenger side of the Supercharger assembly, near the front are two white wires
exiting the intercooler lid. These are the IAT sensor wires. Strip off about 3/8” of the insulation on
each of these wires.
139. Crimp on a provided wire splice connector to each of these wire ends.
140. Uncover the MAF wire loom connector
that hooks to the air box. This should be by the
upper radiator hose at the water-pump. Cut the
blue and the tan wire even with the end of the
existing wire loom. Strip off about 3/8” of insulation from the end of the two wires that continue
back in the split loom toward the engine.
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LS3 L99 Camaro
141. Pull these two wires out of the loom back
to where the split-ring mount clamps to the hose
barb at the water-pump. Tuck the two white
wires from step #138 under the supercharger
inlet and crimp one to each of the tan and blue
wires. It doesn’t matter which attaches to which.
142. Use a heat gun or hair dryer set on high
to shrink these connections securely. The ends
of the blue and tan wires that go to the plug are
abandoned and can be taped off and recovered
with the existing split loom.
143. Cut a piece of the provided split loom
(about 18”) to reach from the split-ring clamp, following the white wires back to where they enter
the Supercharger lid on the passenger side of
the Supercharger. Slide the split loom over the
wires, one end should be at the junction by the
split-ring clamp.
144. The other end should reach all the way to
the other end of the wires at the Supercharger
lid. It’s a good idea to cross tape the junction of
the two split looms at the water-pump hose barb.
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LS3 L99 Camaro
145. Use a 15mm wrench to remove the OEM
tensioner pulley.
146. Install the supplied 76mm pulley and
torque the bolt to 40 ft-lbs. Verify your torque
wrench settings.
147. This procedure is easier with a helper.
Route and install the drive belt according to the
drive belt diagram. Use a 15mm long wrench to
compress the tensioner to utilize all the pulleys.
With the tensioner still held compressed, install
the new idler pulley. Ensure that the rectangular
nut engages the slot behind the bracket, and using a lever against the temporary bolt as shown,
lever the idler toward the tensioner pulley. Tighten the bolt using a 15mm wrench, and torque the
bolt to 40 ft-lbs.
148. Remove the tensioner idler pulley lever
bolt. It’s a good idea to check the belt tension
periodically, and adjust the idler pulley using the
bolt and lever as necessary.
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LS3 L99 Camaro
149. Replace the air filter and air-box cover
removed earlier, snapping the retaining clips in
place to secure the cover.
150. Plug the MAF sensor connector at the
airbox neck.
151. On the passenger side of the engine,
near the thermostat on the frame rail, unplug the
fuse center wire loom hold-down clip by pulling it
away from the frame.
152. Use the provided self-tapping bolt and
a ½” socket to prep the hole just vacated for
mounting the intercooler pump. Chase the hole
to ensure the proper bolt function.
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LS3 L99 Camaro
153. There are two ways to approach this. The
first way: You place the Intercooler pump in the
Adel clamp so that the bolt will be toward the
rear. In all cases, the discharge barb points forward and directed toward the outside edge of the
fan shroud. Tighten the bolt being careful not
to strip the threads. The second way (pictured):
Mount the Adel clamp to the frame but do not
tighten. Use a mild soap solution (like Windex)
to lubricate the rubber of the clamp.
154. Slide the pump into the Adel clamp. Access to tighten the bolt is easiest if done from
155. Mount the supplied reservoir mounting
bracket to the center stud of the passenger side
coil bracket using the supplied nut and a 10mm
156. Attach the reservoir bottle to the bracket
as shown with the supplied bolts and a 10mm
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LS3 L99 Camaro
157. Route the passenger side hose from the
intercooler heat exchanger up into the engine
compartment. Cut the hose to fit at the intercooler pump discharge barb. Clamp on using a
supplied spring clamp.
158. Take the cut-off section of the aforementioned hose and attach one end to the inlet barb
of the intercooler pump. Clamp on the barb with
a provided spring clamp.
159. Route the hose up parallel to the heater
hoses to the outlet barb of the intercooler reservoir. Clamp securely on the reservoir barb using
a provided worm gear clamp. This may be made
easier by removing the upper end of the fuel line
hose to the manifold at the fuel rail temporarily.
160. Cut off the “U” section short leg of the provided “J” hose. The short end will not be used.
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LS3 L99 Camaro
161. Use a provided clamp on the end of the
hose you just cut and push the remaining section
of the “U” onto the passenger side barb of the
intercooler. Verify your hose is secure and the
hose is pointed toward the passenger side of the
car as shown.
162. Cut 1” off of the remaining short leg of this
hose and route to the intercooler reservoir. Use
a provided worm gear clamp on the reservoir
barb and tighten securely.
163. Cut 1-1/2” off the short leg of the remaining ¾” x 4” x 36” x 90° hose.
164. Place a provided clamp on the short leg of
this hose and push the end onto the intercooler
barb on the driver side behind the supercharger.
Tighten the clamp securely with the hose pointing toward the driver side of the vehicle.
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LS3 L99 Camaro
165. Cut 11” off the end of this hose and route
below the air conditioner hose bending toward
the front of the vehicle. Insert the provided hose
coupler and use the provided clamp to prepare
the end of this hose.
166. Route the remaining driver side intercooler heat exchanger hose up into the engine
compartment toward the air conditioner hoses.
Cut 2-1/2” of the end of the hose and using the
provided clamp join the hose to the hose coupler just installed in the previous step. Use a zip
tie to anchor the coupling to the existing battery
wire loom bundle behind the air-box.
167. Slide a length of the provided 1” split loom
over the passenger side intercooler heat exchanger hose to protect the hose from chaffing
at the rectangular hole in the splash shield and
adjacent edges.
168. Slide a length of the provided 1” split loom
over the driver side intercooler heat exchanger
hose to protect the hose from chaffing at the
rectangular hole in the splash shield and adjacent edges.
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LS3 L99 Camaro
169. This is the intercooler pump wiring harness components.
170. Insert the provided 15amp fuse into the
fuse holder at the end of the red wire from the
relay box.
Remove the fuse center cover.
172. Remove the positive (+) lug nut using a
13mm wrench. Make sure that your battery negative (-) terminal is still disconnected.
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LS3 L99 Camaro
173. Cut the red wire with the “eyelet” connector to 13” in length. Strip off ½” of the insulation
from the end and crimp on the supplied “eyelet”
connector end.
174. Zip tie the relay box of the wiring harness
to the existing OEM harness in front of the radiator overflow reservoir as shown.
175. Replace the positive (+) lug nut incorporating the red wire “eyelet” you attached in step
#173 from the new harness.
176. Zip tie the fuse holder of the wire harness
to the existing wire harness by the headlight adjusting screw as shown.
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177. Route the intercooler pump plug around
the fuse center and down toward the intercooler
pump. Plug the end into the terminal at the bottom of the intercooler pump.
178. Use one of the provided self tapping bolts
and a ½” socket to tap the hole in the fender well
just forward of the shock tower and above the
existing wire loom as shown.
179. Cut off the existing “eyelet” connector off
the black ground (-) wire, strip off ½” of the insulation and crimp on the supplied larger “eyelet”
180. Use the self tapping bolt from step #178,
incorporate the just installed “eyelet” on the
black wire from step #179, and ground the wire
harness to the automobile body at the prepped
hole. Tighten snugly being careful to not strip
the threads.
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LS3 L99 Camaro
181. Use the fuse removal tool in the fuse center to pull the 5amp IGN fuse from slot 15 of the
fuse center.
182. Install the provided fuse-tap on one leg of
the fuse.
183. Replace the IGN fuse with the fuse tap
back into the slot from whence it came.
184. Strip off 3/8” of the insulation off the end of
the yellow wire and crimp on the provided spade
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LS3 L99 Camaro
185. Route this wire into the fuse center and
connect it to the fuse-tap on the IGN fuse you
just reinstalled.
Close the fuse center cover.
187. This is the air inlet tube component assembly. The “hump” hose connecting to the airbox may have a long and a short side. Should
that be the case, the long side goes to the airbox/filter side, and the short side connects to the
air inlet tube.
188. Push the air inlet tube onto the air-box
and throttle body necks and tighten all clamps
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189. Cut a piece of the remaining 3/8” hose to
fit between the PCV fitting on the passenger side
valve cover near the oil-fill spout, and the hose
barb on the bottom of the air tube assembly.
Push one end onto the hose barb at the front of
the valve cover.
190. Route the other end of the hose behind
the pulleys and push onto the hose barb on the
bottom of the air inlet tube assembly, in front of
the throttle body.
191. Re-attach the battery negative (-) terminal
in the trunk of the car. The tire pump, floor and
carpet can be replaced as well.
192. Fill the intercooler system at the reservoir
with a 50/50 mixture of coolant and de-ionized
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193. Verify that your coolant drain is closed,
and use a filter/strainer to pour the recycled coolant/water mixture that you drained from the radiator in steps # 9, 10 back into the radiator.
194. Attach the Vacuum routing diagram, intercooler-belt routing diagram/information sticker in
a conspicuous location. We chose the underside of the hood.
195. Attach the “Use Premium Fuel Only” decal to the gas tank fill cap or door.
196. Start the vehicle for five seconds and shut
off. Check for fuel leaks and supercharger/engine pulley belt alignment. Check the radiator
and intercooler reservoir levels, topping off as
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197. Test-drive the vehicle for the first few
miles under normal driving conditions. Listen
for any noises, vibrations, engine misfire or anything that does not seem normal. The supercharger does have a slight whining noise under
boost conditions, this is normal.
198. Re-check the radiator and intercooler reservoir coolant level regularly over the first 1,000
miles, top off level as needed.
199. After the initial test drive, go through the
belt tensioner process again (step #147). When
next you start driving, gradually work the vehicle
to wide open throttle runs. Listen for any engine detonation (pinging). If engine detonation is
present, let up on the throttle immediately. Most
detonation causes are low octane gasoline still
in the tank.
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If you have questions about your vehicles performance, please check with your installation facility
or call Magna Charger at (805)642-8833, Monday through Friday, 8am to 5pm (Pacific Time).
Ventura, CA. MagnaCharger,
manufacturer of superchargers
and supercharger systems for
foreign and domestic vehicles,
was presented the prestigious
award at the annual Specialty
Equipment Market Association
Show (SEMA in Las Vegas,
The award was presented for
the Radix Intercooled supercharger system, designed for
the Chevrolet, GMC and Cadillac, 4.8L, 5.3L and 6.0L General Motors Trucks and SUV’s
including the new H2 and SSR.
Sponsored by General Motors Corporation, the SEMA Design Award for the “Most Innovative
Product” was awarded to Magna Charger and recognized by the all-star team of judges for their
outstanding and innovative design achievement. The criteria used by the judges included innovatioin, technical achievement, quality and workmanship.
Please enjoy your “Magna Charged”
performance responsibly.
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