2015 RT 5.7 M6
Post up the log of your BCM using alfaOBD. I suspect the autos will also need the chassis type changed but I don't know if they are different than the manuals. Look at my first post in this thread, I give the changes I made to get it to work for my car.do you know how to get it working with an automatic?
I really should start paying attention to this thread, you really are putting in all the hours.
Tazer was easy to use, Alfa OBD, I'll probably turn my car into a paper weight.
First off I would like to thank DionR, who has a 2015 RT manual with STP and launch control, for posting his BCM and ABS module info pulled from alfaOBD. Basically this all started in this thread, post #38 where DionR mentioned something about adding drive modes using Tazer. Well that and his...
Basically the key to get it working is turning on STP and drive modes (autos will also probably need trans mode set as well) but most importantly getting the correct chassis type. You then have to initialize the ABS module so it knows the configuration has changed. Best way to know what needs changing is if someone with an auto and STP can post their BCM and ABS logs for comparison like DionR did for me.
I seriously searched to see if anyone was able to get launch control to work on a non-STP equipped challenger/charger and I found nothing so I thought it was not possible. Even on the HP tuner site, folks were asking how to do it. It's so cool it worked with minimal changes to the BCM.