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Thread: new exhaust fitted now got a whistle!

  
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    new exhaust fitted now got a whistle!

    right got a stage 3 astra gsi bought a new zorst system for it got the cat back and precat installed all good until today when i got my de-cat through fitted it and under load i get a whistle from the exhuast cant really work out were its coming from tho sounds like theres too much pressure going through the exhaust! im not confident on one of the joint so im going to buy a new gasket tomoz and see how i get on but has anyone else had any similar problems? just a really load sorta screeching sound under load its a bastuck cat-back and milltek pre-cat and de-cat! one of my mates thinks this could be down to back pressure :S

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    Help

    Right tryed the gasket no luck any ideas

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    Quote Originally Posted by shultsy12 View Post
    Right tryed the gasket no luck any ideas
    Sounds like the precat isn't on the turbo correctly.

    The pipe needs to be held square on the turbo then the clamp needs to be fitted, which also needs to be square on the v band.
    Astra SRi Turbo
    281|317

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    But I didn't touch the pre-cat and it was fine before i did the de cat the exhaust doesn't sound like it's blowing anywer tho surly u would hear it if it was?

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