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Probably exhaust heat shields, get under there and give them a rattle. The banana shaped ones out of the headers are commonly loose. Thanks for the response guys! turns out to be exactly what AKPV mentioned above, the heat shields on the exhaust. I had a mate rev the car to 2500RPM, and i was able ...

Hi guys, I'm in need of some advice, recently purchased a 2007 outback 5sp manual and have recently noticed a hissing noise when coasting to a stop at about the 2500RPM mark, the same noise can be heard accelerating through the same RPM. the noise stops when either the clutch is engaged, or when the...