Warning to Previous Diablo/CMR Flashed and Returning to Stock
So I ended up in a pretty bad jam. I, like a lot of folks here, still had my diablo handheld married to my car while tuning with HP Tuners. After HP added gear ratio support, I had no reason to continue with it. So I returned the vehicle to stock, which in the Diablo handheld also includes bits and pieces of the TCM.
My stock backup in my Diablo was with a Mopar TCM, whereas I had currently installed a stock one. In returning to stock, the Diablo basically reset my stock TCM to be a Mopar TCM, at least some of it, and the biggest one was the gear ratio setting. The Mopar TCM comes set to 3.73 gear ratio. I connected and using HP Tuners read the TCM and it still told me gear ratio was my stock 3.06. I retyped that in anyways, loaded it, did the EGSinit and went out for a test ride. Car popped incorrect gear ratio and went into limp mode. Tried twice more, HP Tuners still seeing 3.06 gears, still popping codes. I finally hooked up the Diablo handheld, set the gear gear ratio with that and everything went back to normal.
I don't have reads or logs in doing the procedures, I can only state what I saw. I recommend after returning to stock immediately go in and reset your gear ratio with the Diablo, before getting rid of it entirely. It does not marry the Diablo to the car.