Active Autowerke S63 AFlow F10 Catted Downpipes | V8 BMW M5 M6 523 you should strongly consider using

you should strongly consider using the resonated version

We've been able to extract ~415 lb/ft of torque and ~378whp lap after lap without any problems

Don't discard your old GREEN filter

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Active Autowerke S63 AFlow F10 Catted Downpipes | V8 BMW M5 M6 523 you should strongly consider usingNO PERFORMANCE TUNE NEEDED. Active Autowerke is proud to bring you our hand made Signature S63 N63 Downpipes for the twin turbo V8 BMW M5, M6 models. These downpipes are for the F10 model M5 and M6 V8 cars only. A turbo impeller wheel speed is mostly limited by the exhaust back pressure within the system. If one could eliminate some or most of this exhaust back pressure, the turbo will spool that much faster and effortlessly resulting in quicker