Sports Series High Flow Catted Primary Downpipe 2023+ XM S68 Engine f93 Heatsoaking is not an issue

Heatsoaking is not an issue at all as shown by the consistency of the IAT staying in the same temperature range throughout the WHOLE RPM powerband

The replacement throttle body flange is made out heat treat high tensile stainless steel

You are not alone as this is a common situation with many enthusiast in this situation

Introducing our new Sports Series 4" High Flow Metallic Catted Downpipes for your BMW B48 four cylinder turbo engine

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

Sports Series High Flow Catted Primary Downpipe 2023+ XM S68 Engine f93 Heatsoaking is not an issueIntroducing our new Sports Series High Flow Catted Primary Downpipes for your twin turbo S68 engine! Fits 2023+ XM (G09). Key Features: Made in the USA! Manufactured in house. Now available for the 2023+ BMW G09 XM S68 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