![Integrated Engineering Downpipe | B9 A4 · A5 F06 · F12 · F13 M6 4.4L Turbo V8 [S63] Street Bushing Set (BSH05A2) /](https://cdn.shopify.com/s/files/1/0635/0032/1015/files/IntegratedEngineeringDownpipeB9A4_A5.png?v=1683669676)
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Ships within 48 hours · Estimated delivery Aug 24 - Aug 29
Street Bushing Set (BSH05A2) / Track Bushing Set (BSH05A3)
44% increase in flow over stock
Reduces operating wear
No wiring is required as a consequence of this
and bellmouths work together to ram more air into the cylinders
Integrated Engineering Downpipe | B9 A4 · A5 F06 · F12 · F13 M6 4.4L Turbo V8 [S63] Street Bushing Set (BSH05A2) /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 aggressive exhaust
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