Noise at boost?

[irupp33]

Ok i just switched cars from my Tsi now i have a 91 gst, supra sidemount,greddy B/C, hardpiping, 3 in turbo back, and a greddy type s. my question is that when im running at about 15 psi. i hear a high pitched whistle. kinda like the BOV is partially opening up. Would it just be out of addjustemnt? And could anybody give me some tips on adjusting it?

[96spyderman]

have you done a boost leak test?

[redline4611]

is ur boost controller hooked up right, mine started doing that when my boost controller wasnt put on the right way. sort of a high pitched, deeper whistle when the boost got high.

[irupp33]

Not sure i thought it was hooked up right because it never gave me problems. I dont have any diagrams in how its supposed to be though, could n e bod be a nice guy and draw me up a quick one? thanx

[96spyderman]

go to www.vfaq.com they have tons of info for hooking up lots of stuff... they do have a diagram and instruction for hookin up a MBC.

[sganc4life_4]

Did it do that before the hardpiping(intake?)?? If not its just because of your hard pipe, you can hear the turbo spooling more especially if u have the stock T25.

[LouieAWDTSi]

Originally Posted by sganc4life_4

Did it do that before the hardpiping(intake?)?? If not its just because of your hard pipe, you can hear the turbo spooling more especially if u have the stock T25.

This is very true. Once I put my 3 inch intake on,the spool was much louder. Leaks happen all the time and probably are happening now, if you can, test it or just be a great listener. For example find out what direction its coming from such as...exhaust manifold, downpipe,intake, etc. My DP is leaking air right now but I just gotta wait til i get around to it($). Good luck!

[irupp33]

No it was there b 4 hardpiping. I still feel pull all the way through though.

[sganc4life_4]

Leak then, do boost leak test