I have a 2011 Challenger R/T auto 5-speed, with headers, cam, 180 tstat, catless mids, and a ported throttle body. I got all the work done by Stu from Inertia- tuned by him as well, I’m having issues though. I cannot take off the line with out my car going into limp mode. I lose traction and the car will not shift out of first gear and when it hits the rev limiter it throws the car into neutral. In any gear it will happen. If I lose traction in 2nd gear, it’ll do the same. I talked to Stu and he said it’s not a tuning issue. I don’t understand why the car won’t shift before the rev limit. It’s an auto, so I don’t understand why. Does anybody have any helpful info? I am going to change my tires to a softer compound and possibly change out the rear sub frame bushings as well. But I don’t know if that will fix the issue.