Fuel Pressure Dip - Deutschwerks Fuel Pump - PWM Ctrl

[beetos]

I use a DW440 on my GR Yaris using a fan output, mapped to map1 v RPM. PWM runs at 70hz but my brushless controller is a PWM type. DW literature say low duty is low pump speed but that is not correct as I found that high duty is low pump speed (off at 100%) and max pump speed is around 4%. Works great. I have it inside a radium surge tank with the stock pump feeding it, also run by PWM off the syvecs.