i am having some hard times with my fuel pressure. i put an fmu from cartech, bbk afpr, and bigger injectors. when i turn the key on and look at my fuel pressure gauge it reads 65 psi. wtf is that. i tried going back to the stock setup and now it still reads the same. running extremely rich for a while and now it wont even start. it is extremely rich and there is raw fuel and fire coming out of my exhaust when the car actually runs. i really need some help cause this is the last thing before i can drive the car. pleeeeease help!!! thanks

 

By "going back to stock" do you mean you put the stock FPR, the stock injectors back in, and eliminated the FMU? If so, that would indicate the fuel supply/return system is incorrectly sized, or there is an obstruction in the return line.

-what does the fuel supply system consist of?
-what is the capacity of the pump(s)
-what does the fuel return line look like?
-what size injectors? What is the anticpated duty cycle?
-what is engine HP and estimated (or dyno tested) BSFC?
-what sort of computer is running the engine, and who tuned it?

 

well thanks for the help anyways. i found out that i had a bad fmu. the diaphragm was pinched so it was holding too much pressure. thanks agian