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Old 02-13-2012, 09:22 PM   #1
Dale2011WRX
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2014 Crosstrek, tangerine

Default High pitched farting noise (from the car)?

Yeah it's funny until it happens to you.

Weekend before last I bolted on a Perrin downpipe and flashed to stage 2 with my AP. Now when I really get on the gas I eventually hear this high-pitched farting noise. It's like when you blow up a balloon and then pinch the opening and slowly let the air out, pwweeeeeee. It sounds like when the engine's really pulling there's some small hole somewhere that's allowing air in.

I did take the intercooler off to get better access to the bolts on the downpipe, but everything seemed to bolt back on fine.

I don't notice any change in performance.

I've had an AEM CAI on for a while, don't see how that could be causing the noise.

It sounds like it's coming from the intercooler, but I'm not sure.

Any ideas for the obvious place(s) to look?
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Old 02-13-2012, 09:41 PM   #2
Napalm3nema
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Did you replace the gasket at the mouth of the downpipe when you put on the new downpipe?
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Old 02-13-2012, 09:43 PM   #3
brew02wrx
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psm proper fitment

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Sounds like a boost leak, check all your fittings for the intercooler and tighten them down
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Old 02-13-2012, 09:57 PM   #4
the suicidal eggroll
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Quote:
Originally Posted by brew02wrx View Post
Sounds like a boost leak, check all your fittings for the intercooler and tighten them down
^ this
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Old 02-14-2012, 07:37 AM   #5
Dale2011WRX
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Default

Thanks for the replies.

Yes, I replaced the downpipe gaskets at both ends.

I'll take the intercooler back off and be extra-careful as I put it back together.
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