The CTS B6 A4 1.8T High Flow Cat Pipe is the premier cat pipe for your Audi.Our high-flow cat is designed to seamlessly fit in place of your restrictive stock catalytic converter, which is situated immediately after the turbocharger.Our high-flow cat 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 of installing our high-flow cat.Upon inspection you will notice a flare which is nearly 4, this flare then tapers to 3 and is designed to allow for optimal flow as the exhaust gas transitions from the turbocharger to the high-flow cat.In addition to being one of the best bang for the buck performance upgrades for A4 owners, our cat pipe is also a very attractive piece.Each 3 high-flow cat is mandrel-bent, hand tig welded.Do you need an additional 02 bung for data logging?Well, that's no problem!Tig welding additional 02 bungs can be done for an additional charge.Fitment:2002 2005 B6 Audi A4 1.8TProduct Details:T304 stainless steel constructioMandrel-bent stainless steelnFully tig welded desigOptional third 02 bungnInstall hardware includednGreat power upgradeTo remove the CEL that will occur, proper tuning software must be used. The use of stage 2 software upgrade is strongly recommended.

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CTS-EXH-TP-0002-B6-CAT

Manufactured by

CTS Turbo