| I assume you mean you want replacement pipes that ditch the catalytic convertor. If so there are numerous posts on this, but I if you go to the second page of posts you will find a couple. There are a couple of different makes that come with a removable baffle so you can adjust your noise level to what you want (Sil, Staintune etc). Going from standard to non-standard pipes will require a changed fuel chip to get the most from them, not essential but definately worthwhile. | 
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