Exhaust Downpipe for BMW E82 E88 E90 E92 135i 335i N55 11-12 Single TurboFeature: The BMW 335i downpipe is machined from T304 high grade stainless steel and are tig welded in houseThe decat is fabricated in the UK and the flanges are laser cut between 10 12mmSharper throttle response due to faster spool of the turboNoticeable power gains and a much more aggressive exhaust note which sounds truly amazingProduces lower temperatures and less exhaust backpressure due to the relief of the turbocharger. Also, the cylinder charge