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Any ideas how to control fuel pump output ? I don't want to run fuel pump at its full speed all the time. Should I use solid state relay with PWM output from ECU , or there are better dedicated fuel pump controller that can handle Walbro 450 easily?.
A lot of people are running PWM through generic SSRs, I think there are a few different OEM drives that aren't too expensive/hard to get. From memory some people were using a land rover/range rover unit.
I did a youtube video on useing arduino on the Audi to fix the fueling issue. It worked so well that i plan on making more videos using micro controllers.
Pump in the Audi is a 350lph Deutchwerke
Warning: im not good at making videos
