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Thread: What are the symptoms of a boost leak?

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    Default What are the symptoms of a boost leak?

    I have no lights on the dash or any other warnings, just can notice a slight wooshing sound with window open. No smoke under acceleration either. Mpg gone from 48 -45. Any input appreciated

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    Regular Member rfc52's Avatar
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    Vehicle : vectra

    Trim : 1.9cdti sri 150

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    [QUOTE=signum_rob;1982367]I have no lights on the dash or any other warnings, just can notice a slight wooshing sound with window open. No smoke under acceleration either. Mpg gone from 48 -45. Any input appreciated[/QUO

    I get a whoosh whistle sound mate but i have a split in my front flexi pipe

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    Is there melted chocolate on the outside of the wrapper?

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    Thanks MrDerv very helpful.

    Other thing ive noticed is a smell of exhaust in the cab on startup, had a glance at the flexi in the dark and couldnt see much or get under far enough, any other thoughts? Thanks

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    Regular Member rfc52's Avatar
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    Quote Originally Posted by signum_rob View Post
    Thanks MrDerv very helpful.

    Other thing ive noticed is a smell of exhaust in the cab on startup, had a glance at the flexi in the dark and couldnt see much or get under far enough, any other thoughts? Thanks
    another sign of the flexi mate what i get aswell.

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    Vehicle : Vectra C

    Trim : SRi XP

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    My flexi is blowing... I checked it today! Whistles on boost now and seems to be a lot more gutless? Like I've lost power?!

    Won't hit 80 as well as she did!

    Is this normal? Or have i got another problem somewhere?

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    Regular Member lee gsi's Avatar
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    My flexi looked ok, no soot etc but when I took it off is was broken in half inside the mesh bit.

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    MY flexi is leaking too, can notice a dip in power and the wooshing noise with a very strong smell in the cabin. Anyone know the diameter of the exhaust before the CAT?

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    Regular Member Ozyboyross's Avatar
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    Year : 2006

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    Quote Originally Posted by exmouthlocal View Post
    MY flexi is leaking too, can notice a dip in power and the wooshing noise with a very strong smell in the cabin. Anyone know the diameter of the exhaust before the CAT?
    55mm measured mine today when on a ramp :-)

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    Regular Member shb1988's Avatar
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    Vehicle : vectra

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    Yeah mine in blown too, got flagged on mot but passed and now is completely black and stinks in the cabin at times, need to find somewhere that'll cut the old one off and re weld a new one in cheapish, anyone know anywhere?

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