Originally Posted by Vic55
I have/had two tune M157 Benz engines- the tunes make the cars crazy fast. I expect no different when we start seeing the F10 M5 tunes.
I was looking at the E63 AMG before I decided on the F10 M5, and checked out the options for ECU tunes for Mercedes. Lots of power increase available from various shops, although I don't think the base AMG motor is in quite as high a state of tune as is the stock M5, so there will, I think, be less of a % increase when the M5 is tweaked. For me the chassis and the DCT were the deciding factors to choose the M5 over the AMG. I wonder if at the end of it all the old adage, "There's no substitute for cubic inches" will trump all of the technology thrown at both the Mercedes and BMW motors?