Integrated Engineering Downpipe | B9 A4 · A5 F06 · F12 · F13 M6 4.4L Turbo V8 [S63] No wiring is required as

No wiring is required as a consequence of this

Drop-in rod 20mm tapered wrist pin for use with stock 20mm pistons only

This is a complete carrier replacement and not some weak aluminum adapter spacer that requires additional bolts

44% increase in flow over stock

Integrated Engineering Downpipe | B9 A4 · A5 F06 · F12 · F13 M6 4.4L Turbo V8 [S63] No wiring is required asThe 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 aggressive exhaust