Ok so the other day I had a boost spike and it was large enough to set a code for over boost. Well I cleared that code and all was well and now all of a sudden I'm hard pressed to even hit 5psi at like 6k in 3rd or 4th gear. All codes have been cleared and I'm still having an issue with my pressures, any ideas? Is it possible that the n75 valve is taking a crap? I've checked everything for any type of boost leak and all is well there. Even swapped out the DV thinking I was leaking boost there.

Thanks

 

a: your in limp mode and need to figure out what is causeing it (Are you running an mbc ?) also if you turn your car off and on and take your boost up slow (dont slam the pedal to the floor) does it reach above 5 psi? if i were you i would slowly accelerate and watch your boost gauge when you get close to 14 psi GET OFF the gas and see if you can do it again. if this works your constantly over boosting due to n75 or mbc etc

 

no MBC just the N75. Today after driving for a while like 200 miles it came back out of limp mode and started to boost fine again. Then I got into it a little and got it to spike to 15 a couple times and the last time it then dropped to 5psi and now is staying there again. So i'm starting to suspect a bad N75.