My rev limiter is set to 6600rpm in drive. when it goes into limp I have to stop, put in park turn off the engine and start it again and it resets.

I put the mopar preformance TCM in my 06 charger R/T. How do I keep it from going into limp mode when using auto stick in 1st gear? Can you adjust the rev limiter so it hits the limit before it kicks into limp mode?

I just took this U7135 out of the box hooked up to my computer and tried to load cromm 9r18 on it and I get a message saying "can not downgrade lower then 9r27" What I'm I doing wrong?