Oh, no. I didn't know you were having this problem with your Coupe. Sorry to hear that...
Some gas stations add ethanol for winter. I was told that this could cause detonation. If so, maybe Dinan software is not fully compatible with it?
Anyway, I hope your car will get fixed soon. Good luck!
2011 X3 35i
2008 X5 4.8i
2003 330xi -sold-
2001 X5 4.4i -sold-
2001 M5 -sold-
2001 M Roadster (SCed, Highly modified) -sold-
2000 M Roadster -sold-
1995 325is -sold-