I just purchased a bmw m3 with smg.
I heard that this car has launch control, a bit limited in US, but its still there. Does anyone know how to use this? I have the sport button, smg control, and a dsc button. Also have the paddle shifters, and am driving pretty good with them now.
Also, I understand that this may be bad for the tranny, but I still want to know how to do it.
Thanks to all!
There are 2 drive programs for your particular car’s SMG.
1) A-Mode, automated, from A1 (starts in 2nd gear for
snowy roads) to A5 (sporty)
2) S-Mode, sequential shifting, from S1 (relaxed dynamic)
to S5 (sporty), and as a special feature, S6 (super
sporty).
I think you are interested in knowing about S6 which is also called "acceleration boost". To use S6, DSC must be turned off, and the S6 program must be active. The shift lever must now be pushed forward and the accelerator pedal depressed. The acceleration boost is performed as soon as the shift lever is released. Further gear shifts are done manually.
Furthermore, there are 2 types of S6 boost. The "racing start"
and the "burnout" mode, both of which are extremely harmful to the clutch and to the whole drivetrain.
Depressing the accelerator slowly to the floor activates racing start. This means fastest acceleration without wheelspin (due to the computer comparing front and rear wheel speeds). Depressing the pedal quickly to the floor activates burnout mode after the shift lever is released. This can be dangerous since the rear of the car can made unstable due to extreme wheelspin.
Burnout mode can be bad not only for the car but also for the driver. Implement the same at your own risk (perhaps in a race track, or an empty rural airport?).
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