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Old 04-14-2005, 03:29 PM   #14
Scooby Specialist
Member#: 56468
Join Date: Mar 2004
Chapter/Region: NWIC
Location: Seattle, WA
04 Improved STI
Dirty White


Originally Posted by offset
On another note I was in fifth gear this morning and laid into the throttle for a bit. I was watching my crappy stock boost gauge and it would run up to 1.4 bar and hold there for a second (until I backed off basically). I heard what sort of sounded like wastegate flutter, and doubt that is good. I am guessing that is do to my stock BPV not being able to work reliably at such a high boost level. If my gauge was accurate at all that would be reading over 20psi on a stock STi turbo which can't be good. That is something else I will need to figure out.

Your observation is noted, your interpretation I'm not so sure about. Do you know what surge or stall sound like? I'd talk to Phil about this and tell him what the sound is like shreak, whistle, farts.....and exactly when if occurs are you:
1) on the gas
2) off gas
3) between gears
4) on boost
5) what's the RPM approx.
6) anything else that can pinpoint exactly when you hear the noise.

Depending on your boost gauge you would probably see wg flutter as it happened, depends, like I said, talk to Phil. Short term unless you are recording det (I doubt it), your car is not in danger.

Now post that 4th gear pull!!
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