ok so i own a spektrum radio and just got an airtronics m11 with dsm... with the spektrum my car have reverse... but not with the m11... i have mamba systems in 2/4 of my cars and the other 2 are on my spektrum... i hooked up the mambas to my comp and updated em both but i have to hold the throttle till the yellow light comes on then my motor is available... problem is i still dont have reverse... everything on my radio is still on stock numbers... i havnt touched any of that... ive read the manual twice... is there something im missing...

you did reset the esc?

reset all your spedo settings, make sure your radio is on all the stock endpoint settings, make sure you RADIO is not set on reverse, and then set your spedo.

however you may want to on your EPA turn your throttle to 140 and brake to 160, then turn brake down accordingly.