Capristo decatalyst downpipe BMW M3/M4 G80/G82
These lightweight test tubes fit in place of heavy OEM catalytic converters. The use of test pipes removes the flow restriction that a catalytic converter places on an exhaust system, while increasing horsepower.
Compatible for BMW M3/M4 (G80/G82) manufactured by 2021
These lightweight test tubes fit in place of heavy OEM catalytic converters. Using test pipes removes the flow restriction that a catalytic converter places on an exhaust system, while increasing horsepower.
The effect is also eliminated silencing the converters, enhancing the aggressive sound of the engine. The test tubes are ideal for track days and racing applications.
On applicable models, the center section is made flexible as an additional protection feature against damage due to vibrations to the manifold pipes and to Lambda or oxygen. The sensor caps are pre-installed and threaded.
Made of T309 (1.4828) stainless steel.
IMPORTANT:
*Designed and recommended for off-road and track use only*
Modifying the OEM catalytic converter may activate a Check Engine Light (CEL).
To disable a recurring CEL you will need to tune the ECU.