Anyone who?s done a gen V 6l80 swap in a JK with 5.38?s and 40+ tires have a good shifting TCM tune they would be willing to share. I am having trouble with shifting and holding gears and low RPM shifting. Thanks in advanced.
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Anyone who?s done a gen V 6l80 swap in a JK with 5.38?s and 40+ tires have a good shifting TCM tune they would be willing to share. I am having trouble with shifting and holding gears and low RPM shifting. Thanks in advanced.
Use BlueCat
Did you run the gear/tire wizard? That would be the place to start. If I did my calcs right, 5.38's on 40's is actually taller than 3.73 on 32's, which is likely the stock calibaration. The computer might think the jeep is moving faster than it really is causing early shifting.
Another easy thing to do is disable the torque converter in gears 1-4. Gets you a little more rpm in each gear and helps the TCC last longer.
BlueCat is great software. I messed with it a bit on my truck, but was never able to make a shift schedule I was happy with. It takes some skill to make a good shift schedule, or maybe I am just too picky.