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I concur with Isak/Besiktas here. My car is a 2011 E90 M3 bone stock. I only pulled a best of 335.8hp whereas his 2010 E92 with the 240E software pulled 358hp. Both of us have MDCT and run on stock 19 wheels.
The 15-20hp increase due to the software update is warranted and legitimate.
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