This is one of the highest-efficiency downpipes worldwide.   Suitable for BMW/Toyota B58 3.0 engine vehicles. Bringing even more performance & exciting exhaust sounds to your vehicle.   Features * Largest diameter downpipe for B58 worldwide * 6" diameter Euro 6 400 cell catalytic converter * No CEL guarantee  * Large diameter design gives you the same efficiency as straight pipes * CNC adapter corresponding to largest diameter design turbo * Fit on GPF/OPF Vehicle  * Dyno test results on stock vehicle, additional 18-25hp& 4kgm, also enhances performance for tuned vehicles. * Suitable for 800hp or more vehicles * Greatly reduces exhaust pressures & temperatures * Possesses both performance & cleaner exhaust emission * Suitable for either stock or tuned vehicles * We have versions for both GPF and non-GPF vehicles   Fits * 2016+ F20 BMW M140i * 2016+ F22 BMW M240i & M240i x Drive * 2016+ F30/F31/G20 BMW 340i & 340i x Drive * 2016+ F32/F33/F36/G22/G23/G26 BMW 440i & 440ix Drive * 2016+ G30/G31 BMW 540i & 540i x Drive * 2016+ G11/G12 BMW 740i & 740i x Drive * 2019+ A90/A91 Toyota Supra * 2022+ G42 BMW M240i   PLEASE NOTE:  These parts are for OFF ROAD/RACE USE ONLY. They are not USA 50 state legal & not legal in some countries.   Catalytic Converter EPA Establishment Number: 101709-CHN-1