Airtec Motorsport De-Cat Downpipe for BMW B58 Engine
Removing the restrictive factory catalytic converter from the OEM downpipe cuts back pressure significantly, letting the engine expel gases more quickly — for sharper throttle response, more power and a more aggressive exhaust note.
Made from stainless steel with smooth bends and cast elbows to maintain diameter, it's supplied with an adapter to mate to the original exhaust system, and also fits aftermarket systems. Gains are further enhanced with a remap.
Key Features
- Stainless steel construction
- Airtec laser-cut plaque
- Smooth bends for improved flow
- Cast elbows retain diameter throughout
- Fits original and aftermarket exhaust systems
- Gains further enhanced with a remap
Please Note
- Sold for motorsport and off-road use only, and will not pass a UK MOT or roadside police check
Compatible With
- BMW 140i (F20/F21)
- BMW 240i (F22/F23)
- BMW 340i (F30/F31)
- BMW 440i (F32/F33/F36)
- BMW 540i (G30/G31/G38)
- BMW 640i GT (G32)
- BMW 740i (G12)
- BMW X3 M40i (G01)
- BMW X4 M40i (G02)
>
