Originally Posted by
Supercharged111
Don't forget about TCC lockup. I bring in 4th lockup a lot sooner than stock and I have an area around 40-45mph where the truck locks in 3rd, shifts to 4th, unlocks, then realizes it should be locked. All without moving my foot. It doesn't happen very often, so I constantly forget to look at it on the tune. 4th should come in sooner than 3rd lockup and I'm pretty sure that's what I command, but they may be a little too close together. Don't forget about downshifts, mine is programmed to hold 4th lockup with quite a bit of pedal. If you go too far, you'll downshift straight to 2nd and never even think about 3rd or they'll be so close together the vehicle may hunt between the 2. All stuff I've encountered while playing with the trans shift points.