159 exhaust sounds like its blowing - Alfa Romeo Forum
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159 2.0jtd

Help 159 exhaust sounds like its blowing

My 61 159 2.0 jtdm exhaust has started sounding like its blowing. I have had it in 2 garages who tell me its not but the latest from an indy dealer in Birmingham was that there might be something inside that is making it sound like its blowing. It doesn't happen all the time but it is really annoying. Any ideas anyone?
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It does sound like its blowing when the DPF is regenerating, could it be that?

Other than that the back box is double skin and on mine (and a couple of others I have read on here) the outer skin has separated making it noisy, although there is no actual hole. A stainless steel cable tie has sorted it.
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