I did the same thing, and with 3k on the odometer, this car feals faster than my 09. The shifting mechanism is a little better and there are hardly any squeaks,and rattles comared my 09. Seems to be better and the MPG is way up on my 13 compared to my 09. 09 was running 12.5 and now I'm at 14.5.
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2009 E92 M3 MT (Gone)
2013 E92 M3 MT (Gone)
2015 SeaRay 250 SLX 8.2 Magnum HO B3