so ive been getting this HISSING noise for awhile now.. kind of sounds like a solenoid? or a small vacuum hose hissing... i put a vacuum cap on the small AWS line.. maybe that could be the case? (aws disabled due to power fc and greddy elbow. silicon lines in place for all lines)

car has been driving fine. and it still boost up to .9bar. for along time now, but the noise irritates me, and im a bit reluctant to take off the UIM and not knowing where to look.

also i hear this LOUD "ching-ing" noise from the rear when i hit my gas... i think its the fuel pump trying to whirl itself to death... usually starts making a noise when im WOT or suddenly boosting ... (doesnt make the noise if i say rev high 2nd... and then WOT 3rd and 4th, but will make the noise if i push the boost on a little when passing on the freeway in 4th,5th)
Also i removed my rear carpet, and i have zero music playing now... cause im about to do an re-install, which is why i probably never noticed the nosie before

ideas?

going to go for a tune in about a week. and i dont think the tuner would want me to bring in an unpreped car.