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#9: 01-03-2013, 03:49 PM
 
 wrxwhit
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Title: Contributing V.P.
Location: Ma.
Car: 2010 LGT RRP Stage 2 Bren Tuned
Posts: 1,080
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I've noticed a strange happening, but not really concerned. AC on and hear a low rumbling/vibrating noise that goes up and down in volume, but seems to be more noticeable at idle. AC works as it should though. And no it's not the new catback lol!!