[anasmak11]

After some intense driving in a track day, my car stopped boosting over 20PSI and I could hear air escaping from somewhere. I checked all hoses and nothing looks loose. tried to do a boost leak test but couldnt find out any leaks. What else can I do?

The car seems normal from idle to around 20PSI. At idle the boost is -20 and AFR is at normal levels.
At WOT, after 20PSI the AFR becomes 10 with a loud noise of air escaping coming out.

 

[08GsrX]

Could the boost controller be the issue? I know a faulty one will leak like crazy under pressure. You did a leak test past 20psi?

 

[evo jason]

Definitely a boost leak. Just do a proper boost leak test with 20+ psi.

Just my noob 2 cents, but if it actually doesn't start until a certian psi you might want to check the bov. It could be failing and starting to leak. Complete speculation though, someone more knowledgable will probably chime in shortly.

 

[lilEvoX]

or a loose coupling. Like they said, do the leak test and find out where you are leaking from.

 

[gamaliel612]

how much psi are you tuned or supposed to hit at full boost?

 

[anasmak11]

Suppose to hit around 25 PSI. But i can clearly hear air escaping after around 20 :s

 

[spikester603]

Is the "air noise" a high pitched sound?

 

[linkbeat]

Is the "air noise" a high pitched sound?

This is funny. I have the same problem. I just installed an EBCS and got road tuned last Saturday and ever since I have the same problem, and I would guess it's also around ~20-22psi.

The "air noise" is definitely a high pitched sound. I tightened the hose clamps to and from the EBCS, but I suppose it could be a leak in one of the fittings. I tried tightening down the fittings on the EBCS but they're already as tight as I can get them.

Chet suggested it may be the stock BPV. Any ideas?