2021 Challenger Super Stock with only 500 miles on it
At the drag strip, the car short shifts significantly on the 1-2 shift at 5000 rpms. This happens whether I let the computer shift or if I use the paddle shifters (it doesn't care if I don't hit the upshift paddle, it will shift at 5000 on it's own in paddle mode). For those that don't know, Dodge increased the redline on the Super Stock's to 6400 rpm's (Redeye is 6300).
At first I thought it was due to the 29.5" tall drag radials (factory tire height is 28"), but I'm told the trans shifts based on output shaft speed so it shouldn't matter. Next thought is that the TCM adaptives need to learn... If the car had never been WOT before without crazy wheelspin (on the street), then the first time at the track maybe it's anticipating all the wheelspin based on what it learned so far? I tried about 6-7 more WOT attempts to see if it would start changing, but it did not. Wondering if I should reset the adaptives and start all over. Then my last thought is wondering if Dodge changed the shift calibrations from 2020 to 2021 to try and cure the 1-2 shift "hiccup" that many experience. I'm currently waiting on my bypass cable to come in so I can read my stock file. I currently have the MPVI2+ for datalogging purposes only since I'm not ready to void my warranty by tuning it just yet.
Any suggestions to help diagnose?