IE B9 A4 & A5 Performance Catted Downpipe

B9 2.0T DOWNPIPE FEATURES Excellent horsepower gains with matching Stage 2 Tune Cast sections ensure maximum flow and gorgeous fit and finish True 76mm throughout without sizing down to OE Sizing at CAT Direct bolt-on fitment with no modifications required 100% 304 stainless steel pipe lifetime construction   Thick cast turbo flange ensures long gasket life and no leaks High-flow 200 cell catalytic converter -full power with reduced pollution High quality metal matrix catalyst Tuned resonator keeps highway drone to a minimum Fully lined extra tough flex section will never collapse internally Complete kit includes everything needed to install UNLOCK STAGE 2 POWER The IE B9 A4 & A5 Catted Downpipe is engineered to completely reduce turbocharger back pressure and increase turbo spool required for the calibrations of a stage 2 ECU tune. The combination of a performance downpipe and ECU tune together unlocks the full performance potential of your stock turbocharger and e