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remapping the ECU is mandatory
The high-quality springs made of chrome-silicon steel have spring rates which are vehicle specific adjusted to the respective standard suspension dampers and wheel loads
increasing power and torque levels right across the rev range
Original tube Ø 80 mm
Supersprint Downpipe With Metallic Catalytic Converter (100CPSI) WRC - BMW 1 Series F20/F21 M140I | 2 Series F22/F23 M240I | 3 Series F30/F31 340I F31 remapping the ECU is mandatoryNOT ROAD LEGAL This Supersprint downpipe is designed to be a plug&play upgrade. It replaces the stock components without any modification. O2 sensor plugs and mounting brackets are in the same position as the OEM unit. The catalytic converter is a 100 CPSI unit, with a metallic honeycomb and a high content of noble metals. The shape and volume have been decided for optimal efficiency, thus the generous size. The high amount of noble metals avoid any