Automotive Manual PDF

This tuning manual is designed to take all of the guesswork out of tuning your Commander 950. Holley is dedicated to providing products for our customers that not only outperform your expectations, but also are easy to install and tune.

NOTE: We highly recommend that you carefully read through all the manuals included with your system before installing and tuning your Commander 950 Fuel Injection System. This will eliminate many problem areas and wasted time. This manual covers only the wiring and tuning aspects of the Commander 950. The hardware installation manual (if included) will cover all aspects of the actual installation of the mechanical components (manifold, throttle bodies, etc.).
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1. Start the supercharger installation by installing the upgraded fuel pump. Ensure that the fuel tank is less than 1/8” full (preferably empty) by checking the fuel level gauge. Even though the gauge may read empty, some residual fuel will be present in the tank. Exercise extreme caution and common sense when working around gasoline. Extinguish all open flame or other sources of ignition and be sure to perform the following steps in an area with adequate ventilation. Personal protection in the form of eye protection and fuel resistant gloves are strongly recommended.
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The starter wire provides 12V directly to the starter or to a relay controlling starter. In some vehicles, it is necessary to power a cold start circuit. A cold start circuit will test exactly like a starter circuit, but it does not control the starter. Instead, the cold start circuit is used to prime the fuel injection system for starting when the vehicle is cold.
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Fuelpak maps for the LTR450 were created with a White Brothers Power Pro performance module installed. The included Power Pro unit must be used in conjunction with the Fuelpak for proper function. Failure to do so will result in poor performance and may cause engine damage.
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If you have a high mileage vehicle, we recommend changing the fuel filters inside the module. The primary fuel filter and the inlet filter sock are not currently available as service parts from GM so changing these filters requires purchasing an all new fuel pump module. Complete fuel pump modules are available from LPE (see part number listed above).

Installation Instructions:
1) Follow the GM service instructions for removing the fuel pump module from your vehicle. Service manuals are available from Helm Inc. ( http://www.helminc.com ).
2) Unplug all the wires from the bulkhead connector at the top of the module.
3) Carefully remove the outer “bucket” from the fuel pump module assembly.
4) Using a small pocket screwdriver, carefully pry the fuel sock (fuel pump inlet filter) from the center pin on the bottom of the fuel pump. Save the fuel sock. You will be reusing the fuel sock when you reassemble the module.
5) Using wire cutters, clip the small ground wire as close to the fuel pump terminal as possible.

Get pdf LS2 equipped SSR & Trailblazer SS High Fuel Pump Upgrade Kit Installation Instructions

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This high flow fuel pump module fits 1997 to 2003 model year Chevrolet Corvettes. During the 2003
model year GM made a change to the Corvette fuel system. This module will not fit the later 2003
vehicles. The 2003 model year C5 fuel system change over occurred on November 25, 2002. If your
car was built on or after this day, you have the newer fuel system and this module will not work in your
vehicle. If your car is a 2003 model year car and the last six (6) digits of VIN are 114930 or higher, you
have the newer fuel system and this module will not fit your vehicle. Look at page 3 of the instructions
for a picture of the 1997 to early 2003 model year fuel tank design (as seen from under the vehicle).
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ON–VEHICLE INSPECTION
1. CHECK FUEL PUMP OPERATION
(a) Using SST, connect terminals +B and FP of the data link connector 1.
(b) Turn the ignition switch ON.
NOTICE: Do not start the engine.
(c) Check that there is pressure in the hose from the fuel filter.
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The 2004 to 2006 GTO fuel system uses a method that is referred to as a “return side jet” to fill the fuel pump canister. This means the fuel from the fuel pressure regulator return is being used to create the high velocity jet that fills the pump canister. The pump itself, like most modern fuel systems, actually pumps the fuel out of the canister to the engine and the jet refills the canister. This means that if you are using all or almost all of the fuel that the pump can deliver, there is little or no fuel returned to the canister by the pressure regulator. Since there is nothing left to drive the jet, the jet is not able to refill the canister and the pump will eventually run dry. For this reason it is even more important to have a pump capable of delivering more fuel than is needed on the GTO.
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LPE offers this in-tank fuel pump for high performance applications where the standard pump is not capable of supplying sufficient fuel flow. Designed to fit the 1997 through early* 2003 C5 Corvette. This pump is rated at 225 liters/hour (60 gph) at 60 psi of fuel pressure at 13.5 volts. This is sufficient to handle up to roughly 600 HP, allowing for hot fuel handling and jet pump operation. Boost referenced fuel systems will have slightly less flow capability due to the higher fuel pressure. For higher horsepower applications, LPE suggests the addition of a Boost-A-Pump fuel pump voltage booster. This pump has been durability tested at up to 17 volts continuous operation. This is the same pump as used in the LPE twin turbocharged C5 Corvettes. Includes pump, pump inlet filter, housing and housing “sock” type filter.
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Condition
Coolant leaking from coolant reservoir bottle wiring connector contaminates the wiring harness. Contamination can result in various malfunctions of the instrument cluster.
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