I noticed similar results
@psrivats...I manipulate the OD switch on almost every drive to achieve higher RPMs for boost by keeping OD on until it's about to shift 3-4 around 2500 RPMs. Switching to OD off before it shifts to 4th allows me to be higher in the RPM range when lockup occurs soon after in 3rd. This is better than lockup occurring at a few hundred RPMs lower when cruising in 3rd with OD off.
I just saw this thread and realized the info I've been looking for has been sitting in the forum for years. I'm going to try to learn more from
@Juggernaut on how to raise the 2-3 and 3-4 shift schedules using my HP Tuners device...as I believe it will be a game-changer for the 42RLE Turbo setup.