My shift mph is set at 76 for the 2-3 shift, sometimes it hits the limiter, sometimes it doesnt, when it doesnt hit limiter it seems to hang, kinda like a flat spot, its killing my mph too, I have scanned it and my mph at the intended shift rpm is around 71-72, do you think dropping the mph down to 70 might help with the flat spot/limiter ? This is the settings from dyno tune, I have hp tuner now and IM trying to fine tune everything !
I have the same problem. My settings are set at normal= 73, and hot= 69. Mods are similar, 386rwhp unlocked, 7.56 w/1.64 60ft. Shifting at 6750.. Where are you shifting at? I thought maybe, I should lower to 6500.
The PCM has to meet 2 conditions in order to shift, MPH and RPM. What I do is set the MPH lower than ideal so the shift will be based on RPM. So, in your case, set the MPH to 67 and set the RPM desired shift rpm. Also, the other gears MPH will need to be lowered as well.