My experience with the MDM for a wheel spinning start is that it's pretty good so long as you don't totally break the tires away. If you do that, then it lowers the power too much, for too long. OTOH, if you launch with just a little wheel spin and then floor it, then the MDM is almost perfect.
For autocross, I turn ESC totally off because, even though it gets the launch ok, it really interferes with trail braking and rotating the car around a tight turn. It can kill the throttle for what seems like forever and it'll hit the inside rear brake to kill any really good rotation.
Dave
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