This is a discussion on Kleemann ECU Tune within the CLA Performance forums, part of the Mercedes-Benz CLA Forum category; Originally Posted by neilman45amg Any change in shifting behavior in C mode? Early and frequent upshifts is frustrating...and S mode holds gears too long...I have ...
S mode is sportier and it keeps high gears for a long time, because the ECU thinks you are trying to speed up. Mainly meaning. If I'm accelerating from
0-120 in a race, the gears in s will hold up to around 4-5k sometimes even 5500
That's so you get a bit more speed before you upshift.