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Evo 8 fuel relays

Practical Harness Construction - Club Level

Discussion and questions related to the course Practical Harness Construction - Club Level

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Hi guys I’m currently in the process to make a harness for my 2003 Evo 8 USDM. So I noticed there are 3 relays for the fuel pump relay 1 powers relay 2 and relay 3 is for low and high voltage for dual speed pump correct me if I’m wrong please I’m new to this and still a far way to go. So since I’m using a Linkecu G4+ and dual 450lho Walbro fuel pumps one is running like the oem second one via Aux controlled by the ecu. So when making the harness I want to include the wiring for the primary pump. Can I just delete all those relays and just have a single one for each pump? Fuel system is modify so overrunning the fuel pressure won’t happen. Thanks Luis.

Attached Files

Yes, you can get rid of the speed control relay and just switch the two pumps on individually.

Thanks Adam! Man you’re everywhere you helped me in Facebook as well thanks!