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The factory downpipe uses a press formed process to produce the "ball" joint to connect to the factory exhaust
thermal degradation occurs
The factory donut flange design is retained
Improved design of "ball" connector for better flow characteristics over factory connector
Now available for the 2012-15 BMW 328i/320i/428i/420i/228i N20 Engines
Competition Series Mid Pipes 2020+ X3M & X4M S58 Engine 1 series The factory downpipe uses aIntroducing our new Competition Series Mid Pipes for your twin turbo S58 engine! Fits 2020+ X3M and X4M (F97 F98). Key Features: Made in the USA! Manufactured in house. Now available for the 2020+ BMW X3M X4M S58 Engines! 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 Deletes factory resonators for improved flow No Drone! (with
