99-02 LS1 F-Body (Plastic) Racetronix Fuel System (New Version)


Rated 5.00 out of 5
( 1 reviews )
(1 customer review)
Model Number: RFPK-001

99-02 F-Body Racetronix RXP255 Fuel Pump Assembly with Racetronix Fuel Pump Wiring Kit (Hot wire kit) PN:FPA-001B & FPWK-017W.

FPA-001B Fuel Pump Assembly

•For factory stock or mild HP upgrades to 600HP

•Racetronix RXP252T 255LPH turbine fuel pump*

• Venturi Jet-Pump feed system – Racetronix exclusive

•Plug & Play Teflon wiring harness – E85 Compatible

• High-pressure non-kinking fuel tube

• Custom 30 micron pump filter sock

•Canister Nylon pre-filter


FPWK-017W Fuel Pump Wiring Kit

•Plug & Play (no cutting or splicing required)

•Weatherproof factory connectors

•Heavy-gauge automotive-grade copper wire

•Heavy-duty weatherproof relay

•Weatherproof fuse holder

•Alternator-direct power for maximum pump performance

•Body ground upgrade with battery nuts (optional)

The FPA-001B is recommended for factory HP upgrades to 600HP @ 58PSI using the factory lines and fuel pressure regulator. HP support may vary for N/A or F/I motors. Please factor in a 20-25% safety margin between what your motor needs and what your fuel system can supply. Our FPWK-017W wiring kit is highly recommended to maximize performance. Please contact your local Racetronix dealer to discuss your fuel requirements.

Why a universal pump can not be properly used in the 1999-2002 f-body:

The 1999 & up LS1 F-body cars have a pump that is inside a plastic fill-bucket. The fill-bucket is equipped with two inlets on the bottom. The equalization checkvalve is used to fill the bucket when the level of fuel in the tank is greater than in the bucket. The equalization checkvalve does not allow fuel to exit the bucket. The venturi system’s inlet is a combination checkvalve and powered suction system. The factory pump supplies pressurized fuel via a small tube which feeds a calibrated jet inside the venturi system. This jet of fuel shoots across the base of the checkvalve inlet thereby creating a suction effect which draws more fuel from the bottom of the tank through the filter sock. This venturi system keeps the bucket full all the time even when the fuel tank is almost empty. A full bucket keeps the pump immersed in fuel regardless of the tank level so that when the tank is low on gas and you are doing some hard cornering or acceleration the pump does not run dry and start aerating (air bubbles) the fuel. This happens as the fuel sloshes from side to side in the tank leaving the center low on fuel. This can cause detonation and possible engine damage. The 99+ F-LS1 cars with plastic tanks have no baffling in them so the bucket is very important. The bucket also allows the car to operate with lower fuel levels in the tank due to its scavenging effect. The fill-bucket improves motor crank-to-run time as the priming time is reduced under most conditions. The return line feeds the pressure regulator on the fuel module which diverts fuel back into the bucket so that the unused fuel also helps keep it full at all times. Keeping the pump constantly immersed in gas within the bucket can extend the pump’s life by not allowing it to be exposed to open air. Open air within the tank contains moisture and in time will cause the pump to rust / seize up especially if left to sit for long periods of time without the tank topped-up (i.e. winter storage).

What sets the Racetronix F99 pump assembly apart from others?

The Racetronix F99 pump assembly is equipped with an outlet which supplies the factory venturi system which is required to keep the factory system fully functional! All other pump solutions to date do not have this feature which requires a hole be punched in the bottom of the fill-bucket thereby dangerously disabling its functionality.

A factory-style fuel tube is clamped to the pump’s outlet for added reliability under high operating pressures. When the fuel module is placed back in the tank it must compressed causing the tube to bend sharply which can cause standard rubber hose to kink and fail. The fuel tube is highly resistant to the additives in today’s pump gas which will attack and dry out even the best R9 and R10 rubber fuel lines. This is why G.M. uses them as OE equipment.
WARNING: Some copy-cat pump kits use a longer generic flex-tube or rubber hose which can bind up and puncture once the module is compressed back into the tank.

The Racetronix in-tank pump wiring harness eliminates the need for a wiring adapter or splicing which can be unreliable and can cause performance loss. One end the Racetronix in-tank harness has a Walbro connector that plugs directly into the pump and the other end has a Delphi connector which plugs directly into the sender. Teflon wire is used just like in the factory because it is the most resistant to gasoline and its additives. We upgrade the gauge of wire used from the factory to reduce voltage loss which maximizes pump performance. All Racetronix harnesses are assembled using our computerized crimp-quality monitoring system and then circuit checked for the utmost in reliability. A truly plug & play wiring solution. Due to the age of some F-LS1 cars much of the in-tank connectors are black / corroded. The Racetronix harness replaces all these questionable components.
WARNING: Some copy-cat pump kits use fuel resistant plastic wire which is not as durable as Teflon. As well they do not have a new connector installed on the end of the in-tank harness which forces the customer to re-use the questionable old factory connector body. This has also let to some confusion as to the proper polarity forcing some people to remove their tanks again in order to fix the problem!

Racetronix Quality Pumps

The Racetronix FPA-001B pump assembly is based on Racetronix turbine pump technology which provides quiet reliable operation.


This kit has all the parts required to upgrade the factory wiring on GM factory vehicles equipped with the older-style 4-position 150-series fuel module connector to the new-style GT-series connector system. The older-style 150-series connectors are known to fail over time so GM/Delphi has switched all new-production modules to incorporate the GT-series connector system which has twice the current capacity. This fuel pump wiring kit is a must when upgrading to new high-performance pumps which draw 2-3 times more power than a factory pump.

This fuel pump wiring kit contains the following items:

•Racetronix Fuel Pump Upgrade Harness FPWH-017 – Provides a heavy-duty power source for high-performance pumps (up to 30 amps). This harness adapts the older 150-series connector to the new 280-series connector without the need for external adapters or splicing.

•Fuel Module Electrical Bulkhead Connector Kit RCS-028 – Direct-fit 30-Amp rated connector replaces factory 14-amp unit.

•In-tank Teflon wiring harness ITWH-023 – Direct hookup to the fuel pump’s connector, NO SPLICING (Replaces in-tank harness pre-packed with FPA-001B)

Why use a Racetronix Fuel Pump Upgrade Harness?

The Wiring Harness

High performance fuel pumps need a good power source in order to perform to their full potential. On average a Walbro high-performance fuel pump requires twice as much power as a factory fuel pump. Factory wiring is just enough for a factory pumps power requirements because manufacturers need to save cost and weight. Racetronix field tests have shown that running a high-performance fuel pump off of the factory wiring can cut pump performance by 30% or more. Problems with failing factory relays, connectors/terminals and fuse contacts are also common when excessive load is placed on them.

The Racetronix plug and play harness is designed to remove all fuel pump load from the factory pump circuits while providing the pump with a new heavy-duty power source. The Racetronix harness gets its power directly from the alternator’s battery terminal. The voltage at the alternators output is typically 1-2 volts higher than at the battery when the motor is running (high charge/load conditions and WOT). This means that your Walbro high-performance pump can provide as much as 20% more fuel in some cases. The Racetronix harness uses high-quality automotive-grade wire which is resistant to oil, gas, heat and rot. The main length of wire in the Racetronix harness is ten-gauge stranded copper. This is three to four gauges thicker than factory wire which helps reduce resistive power loss to almost non-existent levels. This helps improve pump performance by as much as another 10-20%.High-quality weatherproof fuse holders and relays are used for maximum reliability. The Racetronix harness has factory-type connectors which plug directly into your fuel pump module/sender so no cutting or splicing is required. The Racetronix harness has a redundant ground upgrade as it is necessary to improve the harness on the negative side of the pump’s supply as well.

There is nothing worse than being in the middle of an installation only to find that the manufacturer has skimped on installation hardware. This is why Racetronix supplies a spare ATM fuse, 25 black nylon wire ties, silicon grease and stainless mounting hardware with each kit.

Racetronix harnesses are considered the best by which all others are judged. Attention to detail in every Racetronix harness is evident at first glance. Racetronix spares no expense to ensure reliability, ease of installation and performance. All Racetronix harnesses are assembled using our computerized crimp-quality monitoring system and then circuit checked for the utmost in reliability. This harness is covered by our limited lifetime warranty.



An optional battery to body ground upgrade kit is available (P/N BGK8). This kit upgrades the under-rated factory ground wire running from the battery to the chassis. It includes an 8 gauge copper wire fitted with terminals and battery nuts with accessory taps. We highly recommend this inexpensive option because this is a weak point in these cars.


The Racetronix harness comes equipped with an interface connector just after the relay (see product picture above). This connector in combination with an optionally supplied connector set (P/N PBIC) allows for easy plug and play addition of a pump booster / voltage amplifier such as the MSD or KB units. These voltage amplifiers / boosters will allow the Racetronix single in-tank pump system to support up to 700RWHP when run at 16-17 volts. This configuration offloads the excessive current draw placed on the factory wiring onto the heavy gauge Racetronix harness system. System diagnosis becomes easier by simply being able to unplug, isolate and bypass sections of the wiring system.

1 review for 99-02 LS1 F-Body (Plastic) Racetronix Fuel System (New Version)

  1. Rated 5 out of 5
    ( 1 reviews )

    Eric Kennett (verified owner)

    This kit is awesome, it comes with everything you need to have a brand new high flow fuel pump with it’s own direct connection to the battery with wiring that can actually support the pump. I replaced a dead factory fuel pump with this kit and I think it was well worth it. Plan on a few hours for installation, you’re working in tight quarters, but the instructions provided are top notch!

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SKU: RFPK-001 Categories: ,