so heres some history: My vp went out when i switched from super mentals to mega mentals. i could pull 52 psi with the old pump and supers. when i switched to the hot rod vp and supers, i could pull 55psi. i switched to megas last night, and i could only pull 53psi and i lost 75* on the pyro. Weird. Driving home tonight i could only pull 1100* and 38psi. i checked for codes - but none.

Whats up?

 

I'm guess when you talk about psi, your talking about boost. If your talking bout FP, then I'd think you've got to much and you fried your IP. Check for boost leaks. Inspect and tighten all the intercooler boots.

 

i dont have any boost leaks, and i am talking about boost. the funny thing is i cant get my temps up

 

Boost is derived from fuel so less fuel= less boost= less EGT's to a certain point without going into all the variables.

What is your lift pump fuel pressure?