The CTS B7 A4 2.0T test pipe is the premier test pipe for your B7 Audi A4 2.0T. Our test pipe is designed to seamlessly fit in place of your restrictive stock catalytic converter, which is situated immediately after the turbocharger. Our test pipe features 3" stainless steel piping, smooth mandrel bends, two 02 sensor bungs with an option for a third. Substantial power gains, improved exhaust flow and a more throaty sound are the main benefits from installing our test pipe. In addition to being one of the best bang for the buck performance upgrades for A4 owners our test pipe is also very attractive piece. Our catback exhaust kit bolts up directly to our test pipe with no hassle so future upgrades are easy. \n \nProduct Details: \nT304 stainless steel construction \nMandrel bent stainless steel \nFully tig welded design \nOptional third 02 bung \nInstall hardware included \nThroaty sound \nGreat power upgrade \n \nFitment: \n2006-2008 Audi A4 2.0T with manual or automatic transmission. Does not fit CVT/Front wheel drive cars. \n \nTo remove the CEL that will occur, proper tuning software must be used. CTS Turbo recommends choosing a High Flow Cat for the sake of our environment! \n \nUse of stage 2 software upgrade is strongly recommended.