Active Autowerke G80/G82 M3/M4 Gen 2 Signature Equal Length mid-pipe (US Patent 11248511, UK and EU patent 3882441) n55 all-new SIMON 4

all-new SIMON 4

If you have an Alpha N

Key Features: 40 Rwhp and 40 Ft lbs of torque Increases Higher torque over factory settings through RPM range Recalibrated settings for a smoother and more responsive part throttle transition Recalibrated settings for a smoother and more responsive power delivery Ability to tune all DME's Top speed limiter removed Tune available for 91 or 93 octane fuel

NOTE: Dyno chart for M340 shows stock with AA B58 Catted Downpipe

Specific design to correct a problem with X-Drive cars

Active Autowerke G80/G82 M3/M4 Gen 2 Signature Equal Length mid-pipe (US Patent 11248511, UK and EU patent 3882441) n55 all-new SIMON 4After extensive research and development, ACTIVE AUTOWERKE has announced GEN 2 of our EL midpipes. We worked with our factories to create specially developed RESONATORS that remove rasp from the exhaust tones with minimal change in the volume of the sound. A side benefit is that this also resulted in a reduction in the "2k buzzing" annoying to some BMW owners as well as a reduction in the cold start rattle from the factory. We are recommending to