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I have the M Performance paired with the Macht Schnell Track Downpipes. The M Performance sound is retained throughout the RPM range, with an exotic note past 4,500.
EAS may have recorded a video of my car during a dyno post-install. Tom, could someone on your team post if you have it recorded? I think anyone who was present during the dyno could confirm the great sound and no excessive rasp.
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2011 E90 M3 | Space Gray | RKP CF Roof | MPerf Recaro | Full Interior CF & Alcantara | BMW MPE v2, MS Test Pipes | BPM Tune | MFactory CF DS | Bilstein B6 Damptronic | Full DINAN & Eventuri & DO88 | Modesta BC-04 | Potenza RE-71R
2020 X3M
2020 Range Rover Sport SVR
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