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Old 03-31-2012, 07:28 PM   #1
Scooby Newbie
Member#: 305447
Join Date: Dec 2011
Default 2010 WRX with a Knock? What to do?!?!?!

I have a 2010 WRX with exactly 33k miles on it. I wont sugar coat this... I have driven the car hard.

I modded it with:
Invidia Turbo Back exhaust
Electronic Boost Controller GrimmSpeed
GrimmSpeed Up-Pipe w/38mm EWG Port
38mm Tial EWG
Cobb Short Ram Intake
One Step Colder Plugs
P+L Motorsports Custom Tune

Sometimes when I rev it and hold it at 1300-1700 RPM's you can hear a very noticeable LOUD knock seemingly coming from under the inter-cooler. If you rev fast from 1-3k no knock at all. The knock is intermittent... which would make more sense with a rattle? I'm terrified to take it to Subaru cause they will probably laugh it out the door it came in through. BTW the car drives fine. No power loss, and no check engine light. I need advice...thanks!
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