Products from Racetronix

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. This positive displacement design makes high-performance Walbro pumps small, light weight, quiet, efficient and reliable.


The Wiring Harness


All fuel pumps are voltage sensitive, the lower the voltage the lower the fuel volume. Gerotor pumps exhibit a significant increase in fuel volume with increased supply voltage. A Walbro pump's average fuel volume increases over 18% by increasing the supply voltage from 12 to 13.5 volts. The factory harness is marginal at best for supplying a factory pump with enough voltage to perform well. This is why the 'hot wire' modification is so popular. Replacing the factory pump with a high-performance pump such as the Walbro GSS340 can easily double the current demand.  The voltage drop in the factory harness increases proportionally to the current demands of the pump. Racetronix has documented tests where the voltage drop in a factory harness has caused over a 25% drop in fuel pump volume. The Racetronix harness uses heavy 10 gauge copper wire to reduce voltage-drop to very low levels. The heaviest gauge of wire we have seen used by the competition is one or two gauges thinner. Our power feed comes off the battery where voltage is highest. It then runs through a Delphi weatherproof fuse holder and then to the back of the car. A Siemens weatherproof 40 amp rated mil-spec. relay is used. These relays have silver plated contacts and are the best money can buy so that you can be guaranteed to have trouble-free operation. The Racetronix harness has a ground upgrade wire as it is necessary to improve the harness on the negative side of the pump's supply as well. All the harness connections are crimped using certified Delphi crimpers and are soldered as well. Racetronix supplies a spare ATO fuse, black vinyl wire ties, silicon grease and mounting hardware with each kit.


To install the Racetronix wiring harness simply connect one end to the car's battery. The other end splices in series with the factory power feed to the fuel pump. The old factory + power wire turns on the relay in the Racetronix harness. The relay supplies direct battery power through its thick 10 gauge power feed wire directly to the pump thereby providing maximum performance. Extra wire length is provided so that you can chose your preferred spot to route the wire.

     » Racetronix 2003 & Up C5 and C6 Corvette Fuel Pump Harness

     » Racetronix Fuel Injector Adaptor Harnesses

     » Racetronix Fuel Injectors

     » Racetronix Fuel Systems

     » Racetronix Impedance Converter Harnesses

     » Racetronix LS2 Cam Sensor Retrofit Harness

     » Racetronix LS2 Knock Sensor Retrofit Harness



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