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Old 05-15-2013, 05:28 AM   #1
SNE2040
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Default 2012 WRX Boost Leak?

I have a 2012 WRX running Torqued Performance Stage 2 map @ 19 psi, along with a Cobb Catted Downpipe.
At one point while running TP Stage 1, I acquired the typical boost leak from the throttle body, which was the clamp completely loose. I fixed the issue. The leak at the time made the car sound like it had an intake.

Now at Stage 2 I hear a high pitched squeak at certain rpms under boost. Sounds like you blowing air into a bottle. Not sure if that's a leak or something else.

Any suggestions would help.

Note: according to AP, I hit target boost. Sometimes a 0.1-0.4 spike over 19 psi. Also, still have the rubber gasket couplings over the intercooler to throttle body that is usually the culprit.

Here's a video:

https://www.youtube.com/watch?v=ZRYY...e_gdata_player
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Old 05-15-2013, 07:22 AM   #2
jpatt006
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DGM

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Remove the rubber gaskets from the throttle body hose and retighten, preferably with t-bolt clamps.

If the problem still occurs, try a smoke test to see if there is a boost leak anywhere else.
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Old 05-15-2013, 07:40 AM   #3
SNE2040
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Yeah, I was gonna remove them. Figured to give it a shot and ask here as well.

No t-bolts on hand, I would have to order them. Have to find out what sizes.
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Old 05-15-2013, 08:00 AM   #4
dstroy
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Not sure about the wrx, but the for the sti TB to IC coupler a 2.75" t-bolt clamp works great.
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Old 05-15-2013, 08:23 PM   #5
SNE2040
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Bought new clamps, removed the inserts and its still there. Also notified my underside intercooler looks all mangled... no idea from what
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Old 05-15-2013, 08:32 PM   #6
moonrider_99
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Bpv? The stock one leaks sometimes even with the stock boost levels....
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Old 05-15-2013, 08:52 PM   #7
SNE2040
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Im guessing maybe... i'm just too cheap to spend the money on it this second
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Old 05-16-2013, 07:26 AM   #8
jpatt006
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Quote:
Originally Posted by SNE2040 View Post
Bought new clamps, removed the inserts and its still there. Also notified my underside intercooler looks all mangled... no idea from what
Snap pics of the intercooler if you can.

Before you spend any money on new parts, do a smoke test. No need to buy a $100 BPV when it could be a $10 hose, or even just a disconnected line.
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Old 05-16-2013, 09:27 AM   #9
Dr. octagon
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search google.....NASIOC BOOST LEAK TESTER..........make one, cost you about 40 bucks.
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Old 05-16-2013, 10:09 AM   #10
nmlittlebigman
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Old 05-21-2013, 06:38 PM   #11
V8 GTFO Lesbic WGN
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Quote:
Originally Posted by Dr. octagon View Post
search google.....NASIOC BOOST LEAK TESTER..........make one, cost you about 40 bucks.
or buy one for less than $40 bucks, there is universal testers on ebay.
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Old 05-21-2013, 07:02 PM   #12
blehhh
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My EBCS makes an absolute racket under really heavy load and it kind of sounds like a boost leak. Everything is tightened to oblivion though, and I'm pretty sure it's just the intake & EBCS tweaking out together with all that air.
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Old 05-23-2013, 12:12 AM   #13
SNE2040
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Did a quick datalog.

Hit the target boost (19 psi) for a whole 1 second

https://docs.google.com/file/d/0ByJA...it?usp=sharing
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