Sport Series High Flow Catted Downpipes 2012-16 M5/M6 S63 Engine Finish:Brush Finish The reason why we stopped

The reason why we stopped at 25 PSI was because at 25 PSI

Reduces the high oil temperatures that N55 engine produces which helps reduce oil breakdown

Quick and easy connection and disconnection to throttle body

With it's size and ability to support over 600hp

This allows better internal flow characteristics as the airflow does not need to travel upwards to the top of the core

Sport Series High Flow Catted Downpipes 2012-16 M5/M6 S63 Engine Finish:Brush Finish The reason why we stoppedIntroducing our Sport Series High Flow Catted Downpipes for your twin turbo S63 engine! Fits 2012 16 M5 (F10) and M6 (F12). Key Features: Made in the USA! Manufactured in house. Now available for the 2012 16 BMW M5 M6 S63 Engines! High Flow 200 cell metallic catalytic converter Higher Max Horsepower Power Curve Higher Initial Torque Curve. Torque curve hits faster and higher and longer. Better throttle response and faster turbo spool up times. Mandrel