09/16/2026
FREE for previous and future TRP Ultimate Hardwire Kit customers who need fuel pump speed control.
If you are the original purchaser of one of our Ultimate Hardwire Kits and need to add fuel pump speed control to your setup, our new TRP Fuel Pump Speed Control Harness is completely free.
Order here: totalracingproducts.com/GTRPumpSpeed
Use coupon code SPEED at checkout and provide your original TRP order number in the order notes. If purchased through an authorized TRP dealer, provide the dealer invoice number and dealer name. You simply pay shipping.
Purchasing a new Ultimate Hardwire Kit? Select the Fuel Pump Speed Control Harness option when adding it to your cart and we will include it at no additional cost.
Hardwire Kit: totalracingproducts.com/HardwireKit
Our Ultimate Hardwire Kit was intentionally designed to bypass the factory FPCM and give the pumps full battery voltage. We still believe that is the better solution, especially with a properly designed aftermarket hanger.
However, customers using the restrictive factory hanger with larger pumps such as a DW430 or Walbro 450 can sometimes experience elevated base fuel pressure because the hanger cannot return fuel quickly enough. Some customers therefore prefer to retain the factory high, medium, and low pump speed control.
We created a proper way to do it.
The new harness plugs directly between the factory wiring and FPCM using custom manufactured mating connectors, then connects directly to the TRP Ultimate Hardwire Kit.
No cutting. No splicing. No Mickey Mouse wiring.
The entire harness is constructed from TXL wire, with 10 gauge feed and supply wiring and 16 gauge jumper wiring, giving the FPCM the best chance possible of surviving while controlling modern high current pumps.
Retaining the FPCM still isn’t our preferred strategy, but if your setup requires it, you no longer have to settle for the lower quality solution from “the other guys” just to retain pump speed control.