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  • turbo downpipe

    hi all

    has anyone changed just the turbo downpipe and if so what bhp gains does it give, just trying to find a cheeper option full milltek a bit to much at the mo

  • #2
    Instead of Milltek -

    Consider Magnex - Full system, using org cat, £600
    Scorpion - Full system with or without centre silencer (around £750 - £820)

    Much cheaper than Full Milltek...
    tuner talk: "Just get out and drive the damn things !!!"
    The truth is out there ...

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    • #3
      Re: turbo downpipe

      Originally posted by quick vxr
      hi all

      has anyone changed just the turbo downpipe and if so what bhp gains does it give, just trying to find a cheeper option full milltek a bit to much at the mo
      courtnet sport do there own down pipe poss 10 bhp increase,also you can buy them on e bay.

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      • #4
        On the old Z20LET as fitted to the Astra G and Zafira A.
        I had a Courtenay sport pre-cat by-pass pipe and saw a gain of of upto 19bhp.
        But it did have Iridium plugs, Courtenay sport air filter, Vectra C air feed and a mod'd air box.

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