Trailing off of this thread: http://www.jeepkj.com/forum/showthread.php?t=47829
I'm starting a new thread as I go through this.
So far: stock '04 3.7/42RLE 3.73 rear, no performance mods.
Just loaded the 87 octane custom tune and went for a decent drive to try it out. DEFINITE difference. I know stock these things are cammed to make more torque higher in the power band, but now it pulls harder and shifts better. Whenever you would let off the gas and then press down a gain there would be this light thunk. I spent hours underneath it about 25,000 miles ago trying to figure out what the hell that was all to no avail. Now the thunk is gone.
So to summarize: better acceleration & while the tuner says he can't do anything to the trans itself, it feels like its shifting different/better, all on regular gas. So we're going to drive it this way for awhile and see what happens. Few hundred or thousand miles down the road and I'll switch to the 93 octane and see what happens, then if I ever get off my ass and actually do some physical perf mods, they should complement the tuning. Also have a perf towing tune to try out as well.
I'm starting a new thread as I go through this.
So far: stock '04 3.7/42RLE 3.73 rear, no performance mods.
Just loaded the 87 octane custom tune and went for a decent drive to try it out. DEFINITE difference. I know stock these things are cammed to make more torque higher in the power band, but now it pulls harder and shifts better. Whenever you would let off the gas and then press down a gain there would be this light thunk. I spent hours underneath it about 25,000 miles ago trying to figure out what the hell that was all to no avail. Now the thunk is gone.
So to summarize: better acceleration & while the tuner says he can't do anything to the trans itself, it feels like its shifting different/better, all on regular gas. So we're going to drive it this way for awhile and see what happens. Few hundred or thousand miles down the road and I'll switch to the 93 octane and see what happens, then if I ever get off my ass and actually do some physical perf mods, they should complement the tuning. Also have a perf towing tune to try out as well.