Cooper Posted September 22, 2021 Report Share Posted September 22, 2021 I am looking for some advice on fuel pump wiring. I am setting up a car with a surge tank and would like to run at least the main pump from surge tank to engine on a PWM output as it is just a fast street car and am wanting to run a 1000hp capable fuel pump without overheating fuel through excessive pumping. The vehicle was originally carbed so is a bit of a blank canvas. Have been thinking about just using one output from the ecu and running Two speed controllers, one supplying each pump and running off the same PWM ECUÂ signal. Would there be any issues with doing this? Quote Link to comment Share on other sites More sharing options...
plox Posted September 23, 2021 Report Share Posted September 23, 2021 Just curious, why not run a output that switches the 2nd pump on fuel time when it comes into boost/needing second pump? One of my cars runs 1st 044 full time and second when it comes on boost and it doesn't have fuel heat issues (which it did have when both run full time) I have run a water meth pump via pwm output and a solid state relay but not fuel pump(s) Quote Link to comment Share on other sites More sharing options...
Adamw Posted September 23, 2021 Report Share Posted September 23, 2021 Provided both pumps always wanted to run at the same speed then 1 output to drive two controllers or SS relays is fine. Quote Link to comment Share on other sites More sharing options...
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