This helps improve pump performance by as much as another 10-20%. This is three to four gauges thicker than factory wire which helps reduce resistive power loss to almost non-existent levels. The main length of wire in the Racetronix harness is ten-gauge stranded copper. The Racetronix harness uses high-quality automotive-grade wire which is resistant to oil, gas, heat and rot. This means that your Walbro high-performance pump can provide as much as 20% more fuel in some cases. 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). The Racetronix harness gets its power directly from the alternator's battery terminal. ![]() 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. Problems with failing factory relays, connectors/terminals and fuse contacts are also common when excessive load is placed on them. 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. Factory wiring is just enough for a factory pumps power requirements because manufacturers need to save cost and weight. On average a Walbro high-performance fuel pump requires twice as much power as a factory fuel pump. High performance fuel pumps need a good power source in order to perform to their full potential. No cutting, splicing, crimping or soldering. Why a Racetronix Fuel Pump Upgrade Harness?
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