CTS Turbo high flow cat is made to maximize exhaust flow for highest power gains - Do not compromise performance and sound with factory parts - Unleash your B9 S4/S5 3.0T Potential!
T304 seamless stainless, mandrel bent tubing downpipe to rid your TT of the restrictive factory downpipe
*Coupe models only, Will not fit roadster - A check engine light may occur due to high flow catalytic con
This is the best bolt-on modification that will increase exhaust flow, improve turbocharger spool time and drastically change the sound of your sport SUV.
Requires Stage 2 ECU Remap
Lifetime Replacement
