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By replacing the factory downpipe/catalytic converter with our Sports Series 4" High Flow Metallic Catted Downpipe
The N55 engine does not have a pressurize hose or fitting from the factory that you can easily tap into
the 1/8" NPT bung can be used as a vacuum/boost source (with the optional vacuum port fitting)
5" and the factory exhaust system is 3"
X6 M60i (G06) and X7 M60i (G07)
Sports Series High Flow Catted Downpipes 2015-20 M2 Competition/M3/M4 S55 Engine S68 By replacing the factory downpipe/catalyticIntroducing our Sports Series High Flow Catted 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. High Flow 200 cell metallic catalytic converter Higher Max Horsepower Power Curve Higher Intial Torque Curve. Torque curve hits faster and higher and longer. Better throttle response and faster turbo
