Im going to Home Depot to build a boost leak tester. Ill keep you guys posted.

 

Well i did a boost test...it was holdin NO pressure. I could not hear a leak at all. This was because the air was flowing immediatly out of the turbo outlet while i was pumping. The way i figured it out was i hooked a smoke machine up to the boost leak tester.....smoke was pouring out inbetween the turbo and the LICP. I took the lower LICP off to find nearly half of my gasket missing. Im assuming this was the problem. Ill post once i get the gasket and have everything back together.

 

Well no one with in a resonable amount of distance has the turbo to LICP gasket so i had to order it. I put a thermostat gasket in for right now.....so i can get home. I performed a boost test after the tstat gasket was installed...it holds boost. I dont want to get flamed...i will but the metal gasket in asap.

 

Good luck with the final fix.Another problem solved for others in the future.I like seeing all the possibilities.

 

i had the same problem.. it has a high pitch whine..people thought i have supercharger on me car too... mine was leaking from the compressor outlet to the turbo outlet pipe.. put some rtvs there and fixed the problem...

 

damn its cold out and i have that damn whine.

 

i had the same thing happen but after i got retuned it went away after a month or so but it was so loud, and sounded bad.

 

nice bumped old thread.......ha

 

boost leak, that was my issue with a high pitched sound while spooling

 

either theres a vacuum leak or ur air filter. im on hks mushroom and theres a whistle everytime I boost the car

 

i was running no intake at all and did not hear this high pitched whine until i bought a cheap filter from pep boys and threw it on... now i hear the whine every time i hit WOT... could it be the intake i put on? i will check the ic pipes tomorrow for leaks and post back

 

mine seems to be making noise at low rpm's......like parking lot speeds I need to do a boost leak test as well hoping this is my problem but it's cold here too and it doesn't seem to stop snowing

 

Maybe see if your oil return line is crushed/crimped

 

maybe realize that this thread is 4 years old

 

I had a 1.8t gti that did the same thing years ago. Never effected performance so i never bothered to look into it.