which dump valve oe or turbo smart

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  • 220bhp
    S2Forum Fiend
    • Nov 2004
    • 2578
    • Home: United Kingdom

    #1

    which dump valve oe or turbo smart

    I have a turbosmart piston type dump valve on my car, which I took of to check.
    I tried a mitivac on it, and the piston dos'nt move much, not sure if it should open all the way. .t only opens quater the way.
    I want to change it for na s3 one, just wondered if anyone has any thoughts on which is better,
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