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2010 Forester
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619 Posts
Discussion Starter · #1 ·
2010 turbo engine. Stage 2. No other engine mods. No changes in 30,000 mi. 62,000 miles total.

Driving along today, all of a sudden I hear a medium roar at moderate acceleration. Expressway cruising almost normally quiet. This went on for 5 miles or so while I kept testing to listen and determine the location. It was definitely coming from the engine area or as far back as midway. Then as fast as it started, it stopped!!!!!! I just know it's going to do it again.

Ideas please....
 

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2012 Forester TDi Manual
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1 Posts
bumping this idea up, I have just started to experience a similar noise with my turbo diesel engine

2012 model 40,000kms, my11 wrx cat back exhaust

Noise only comes on between 1000rpm and 2000rpm
 
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