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Introducing our Competition Series Catless Downpipes for your twin turbo S63 engine
we had to CNC machine a new 4
our box enclosure had a big window (open hole) in the back for airflow
The N63T version which is found in the early model 550i and 650i (2011 to early 2012 model)
If you have an Aquamist Methanol Kit
Competition Series Catless Downpipes 2015-20 M2 Competition/M3/M4 S55 Engine Finish:Polish Finish Introducing our Competition Series CatlessIntroducing our new Competition Series Catless Downpipes for your twin turbo S55 engine! Fits 2015 20 M3 M4 and 2020 22 M2 Competition. Key Features: Made in the USA! Manufactured in house. Now available for the 2015 20 M3 M4 and 2020 22 M2 Competition. Higher Max Horsepower Power Curve Higher Intial Torque Curve. Torque curve hits faster and higher and longer. Better throttle response and faster turbo spool up times Mandrel Bent 3" piping. Smooth
