The change in exhaust note, is this not just some odd little thing that the COBB tune does randomly on occassion? I was cruising at 50mph yesterday and all of a sudden the exhaust note changed, I'm guessing the WG's open slightly more or something. No issues with the car at all, v4.01 (again).
Other than that, no complaints and I haven't noticed rich running since reflashing the v4.01 which is odd. I'm sticking here for the time being and will wait for the official release
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