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I got a tune from Randy Mueller of EPIC Motorsports and although I have yet to do a dyno run, I can say that the M3's performance has improved tremendously! There is a stretch of road and when I ran the stock M3 I would get 120 kph before braking. After the tune the car ran 150-153 kph on the very same stretch of road. The all to famous butt dyno confirms the improvement.... FYI
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