AWE Non-Resonated-to-Resonated Conversion Kit for G2X M340i / M440i

Replace your existing non-resonated mid pipes with resonated mid pipes for additional sound tuning -- particularly recommended to be used with aftermarket downpipes. Features & Benefits: For perfect downpipe-tone tuning|Direct bolt-on, no cutting|Perfect fitment guaranteed|AWE No CEL guarantee|Lifetime Warranty|Proudly engineered, designed, and manufactured in-house at AWE