Hey guys I'm running a 2003 Evo 8 in a 1987 Porsche 911. I am using AEM EMS I had to switch fuel pumps from the stock Porsche turbo to the Bosch 044 which has 75.3 psi compare to the wallbro 255 which is 45.psi

So I turn the key on engine off the pump will keep pumping. I thought it stops after it reaches its pressure.

 

There is a fuel pump prime timer that you can set. If you set it to the max the fuel pump will not turn off. You should lower it to like 1-2 seconds something like that. I don't remember the exact value.

 

OK cool thanks