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Thread: one way valve fitted and bad small from the exhaust

  
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    La Bertone's Avatar
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    one way valve fitted and the exhaust gas become smelly

    Hi mates!

    If i disable the oe dump valve with an one way valve and running just the collins dv than the exhaust gas become smelly after i drive a little on high rev.

    If i let to work both of the valves( collins & oe) or if i take out the collins and run just the oe, the smell disappear and it smells normal again.

    Why is this?Do you have any idea?
    MTB Stage II., EDS SMIC, 1.9 derestricted airbox,K&N filter, powerpipe,Collins dv, Scorpion pre-cat decat, Milltek catback system, Wössner pistons, ARP head bolts, etc...

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    Any idea?

    And like this use both dump valves my collins is very very quiet.
    MTB Stage II., EDS SMIC, 1.9 derestricted airbox,K&N filter, powerpipe,Collins dv, Scorpion pre-cat decat, Milltek catback system, Wössner pistons, ARP head bolts, etc...

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