pressure test good...now what.....

[alosh]

well i've started a couple of threads recently hoping to end limp mode...replaced TBB, DVs, F-hose (homemade style) and vacuum lines to it. also replaceds spark plugs for the hell of it. and my pressure test went real good, no leaks anywhere.

now it pulls hard, except when i hit fifth gear. it will pull and hit a wall when it reaches peak boost. its like its in soft limp (instead of hard limp), and in the next couple of pulls a little later in a lower gear, it'll be back to normal, but always hits that wall in fifth.

the only hidden CEL is an intermittent o2 sensor. it used to pull hard anytime even with this CEL. its not heatsoak i know that.

is this my o2 sensor, or should i check other things.

also my new 710Ns will chirp in certain occasions after coming out of hard boosting in 3rd. it sounds kinda like the chirp of sneakers when playing indoor basketball. these are brand new from ECS, that cant be it can it?

sorry about all the threads, this is just driving me crazy

[highPSI-S4]

well i've started a couple of threads recently hoping to end limp mode...replaced TBB, DVs, F-hose (homemade style) and vacuum lines to it. also replaceds spark plugs for the hell of it. and my pressure test went real good, no leaks anywhere.

now it pulls hard, except when i hit fifth gear. it will pull and hit a wall when it reaches peak boost. its like its in soft limp (instead of hard limp), and in the next couple of pulls a little later in a lower gear, it'll be back to normal, but always hits that wall in fifth.

the only hidden CEL is an intermittent o2 sensor. it used to pull hard anytime even with this CEL. its not heatsoak i know that.

is this my o2 sensor, or should i check other things.

also my new 710Ns will chirp in certain occasions after coming out of hard boosting in 3rd. it sounds kinda like the chirp of sneakers when playing indoor basketball. these are brand new from ECS, that cant be it can it?

sorry about all the threads, this is just driving me crazy

Don't think it's the diverters, what 02 sensor is bad? do you have any software?

[BurnAll4S4]

your n75 valve could be bad. mine would send my car in limp mode (or just boost 6psi, idk)

[alosh]

Don't think it's the diverters, what 02 sensor is bad? do you have any software?

i gotta dig through some records where i wrote it down (my vag com was stolen out of a friends car). i am running APR.

[vdub203]

im having almost the same problem , i know the feeling i cant get past 6psi feels slow as hell no cel no hidden cel its like wtf!!!

[RolledMySTi]

I would replace the O2 sensor before you do anything else. I know my car ran a lot better once I did that when I had an intermittent fault code.