Integrated Engineering 3" Catted Down Pipe - Audi A4 B9/A5 F5 (2.0 TFSI)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 engine, delivering 97 horsepower over stock. Get ready to experience addictive power gains across the entire RPM range and an
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Integrated Engineering 3" Catted Down Pipe - Audi A4 B9/A5 F5 (2.0 TFSI)