AIRTEC Motorsport Downpipe De-Cat for BMW G Series – M2, M3 & M4 6rf. 9T platforms direct injection (DI)

9T platforms direct injection (DI) system and provides exceptionally high-pressure fuel (exceeding 2900psi) to the injectors

OEM Number (reference only): 5Q0121251GN

With the ECS Big Bore Turbo Inlet Pipe

CNC flanges made from high quality billet aluminum

AIRTEC Motorsport Downpipe De-Cat for BMW G Series – M2, M3 & M4 6rf. 9T platforms direct injection (DI)By removing the restrictive primary catalytic converters located in the original downpipes, back pressure is hugely reduced, which effectively improves the engines breathing by allowing it to expel gases more quickly. This in return means faster throttle response, increased power output and a more aggressive exhaust note. Complete with replacement fitting kit, the downpipes will mate to a standard or aftermarket exhaust system and come wrapped in a