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Exhaust Woes

Discussion in 'A4/A4 cabriolet/S4 forum(B6 chassis)' started by Davsinq, Apr 21, 2013.

  1. Davsinq

    Davsinq New Member

    Mar 16, 2013
    Likes Received:
    Hi All, I have a BFB engine in a 1.8t Quattro that's just had a new turbo, cat fitted. Over the last few days I hear a Leak on acceleration from the exhaust. If I rev the engine slowly there is no noise but if I rev it hard there sounds like a leak in the exhaust. The noise goes away when the engine stops rocking with the power at about 4k and isn't there when the revs drop. I thought it was a leak at the flexi pipe but it sounds further up and if I get someone to rev it I can't feel any leak at any of the joins. Any Ideas anyone on what to check next?
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  3. Audi Doodah

    Audi Doodah Active Member

    Sep 1, 2012
    Likes Received:
    Try sticking a rag over the end of the exhaust while it's running. This should highlight a leak. Careful not to burn yourself!

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