The
Original
GMC Syclone & Typhoon
High Performance Fuel Pump Kit with Plug n' Play Harness (aka 'Hotwire')
Available
direct!
Fuel Pump Kit

  • Walbro GSS340M 255L/Hr high-pressure fuel pump
  • Filter sock - 30 micron filtering (factory=70 micron) 
  • Walbro GSS to GM power adapter 
  • High pressure fuel line 
  • Stainless gear clamps 
  • Rubber pump mount 
  • Pump sound insulation sleeve 
  • O-ring tank sea
Wiring  Harness

  • Plug & Play (no soldering or crimping required)
  • Waterproof Delphi connectors
  • Heavy 10 Gauge automotive-grade copper wire
  • 40 Amp weatherproof relay
  • Weatherproof fuse holder w/custom SS mounting stud
  • Alternator-direct hookup for maximum voltage
  • Silicon Grease, Spare Fuse, Wire Ties Included
  • Body ground upgrade with brass battery nuts

 
Power hookup at alternator provides highest operating voltage to pump.
Custom stainless steel stud for fuse holder mounting replaces factory bolt.

CLICK TO ZOOM

Weatherproof relay securely mounts hidden under car on factory bolt

C4 relay mounting postiion - yes this car is dirty!

Plug it into factory harness and go!
Simple plug-in weatherproof harness installation. No cutting or splicing!

8 Gauge body ground upgrade attaches to frame bolt to improve vehicle system voltage HD solid brass battery nuts provided for body ground upgrade
(Matched set provided for + terminal)
Voltage with factory harness @ idle
CLICK TO ZOOM

Voltage with RX harness @ idle!

Voltage differential increases to over 2  volts with increase in line pressure / pump current draw @ W.O.T.

This equates to a 20-25% increase in pump volume based on Walbro specs and our field tests!
PICTURES SHOWN MAY NOT BE FOR THE SPECIFIC VEHICLE APPLICATION
Why a Racetronix Fuel System?

The Pumps

Walbro Fuel Pumps have set the industry standard in high-performance. Walbro pumps are QS9000 certified and are used as OE equipment in many production performance vehicles such as the C5 Corvette. Walbro's gerotor design is able to maintain high pressures while providing high volumes as well. This is done by squeezing the fuel out between two gears instead of pushing it like most factory vane pumps do. (i.e. factory C4 pump). This positive displacement design makes high-performance Walbro pumps small, light weight, quiet, efficient and reliable. 

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 pump’s 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 alternator’s 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 40 amp silver-contact 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. 

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. As with most Racetronix harnesses the F99-FPWH is backed by our limited lifetime warranty. 

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 ATC fuse, 25 black nylon wire ties, silicon grease and stainless mounting hardware with each kit.

BGK 
A battery to body ground upgrade kit is included (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 trucks

Syclone Fuel Pump System
This kit contains the following:
  • 340M-FPA Fuel Pump Assembly
  • SY-FPWH Plug & Play Wiring Harness
  • Body ground upgrade
Syclone Fuel Pump Only
This kit contains the following:
    340M-FPA Fuel Pump Assembly
Syclone Harness Only
This kit contains the following:
  • SY-FPWH Plug & Play Wiring Harness
  • Body ground upgrade



Typhoon Fuel Pump System
This kit contains the following:
  • 340M-FPA Fuel Pump Assembly
  • TY-FPWH Plug & Play Wiring Harness

  • Body ground upgrade
Typhoon Fuel Pump Only
This kit contains the following:
    340M-FPA Fuel Pump Assembly
Typoon Harness Only
This kit contains the following:
  • TY-FPWH Plug & Play Wiring Harness
  • Body ground upgrade



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If an item is not in stock the payment link will be inactive - no need to ask about availability.
All payments processed securely on-line only.
Sorry, no phone orders. This is a web based offer only.
(Phone orders can be placed through authorized Racetronix dealers - pricing may differ)
Quantities are limited. No substitutions.
For other quantities please contact sales@racetronix.com
All sales final. No refunds.
Shipping and insurance fees will be added to your purchase for Xpress Post Service with tracking.
(Xpress Post service provides a 2-7 business day average delivery is location dependent)
Upon shipment of your order a tracking number will be provided.
Most orders ship the same or next business week day.