Congratulations and hope you enjoy the car!Interestingly, I owned an F80 M3 and I had it remapped to circa 510bhp. My mate owned a 140i with a tuning box on it and we had a similar dabble to the one you describe. My M3 did pull away but only marginally when in a rolling start. I thought something was off with the remap as I thought I'd muller a tuned 140i. When I sold the car and took the remap off it I thought the M3 felt really really slow so I guess the remap was fine and the BHP figures don't mean that much from a rolling start? My car was a DCT in full sport plus mode.
Bit disappointed to hear you didn't smoke a standard F80. I am collecting a non-s E63 tomorrow so was hoping it would be a good step up on the M3. 1st post here, so hello in advance .
I think it is definitely a step up from an F80 M3, especially the 0-60 range is ridiculously fast, all bundled up with an executive and luxury feel.
M140i is very quick but I feel they lose way more power at the rear wheels than the M3. In my opinion in that race, the tyres you’re running will determine who wins.