Shift firmness seems weak with custom tunes..

[Power Hungry]

Originally Posted by AZFX4

I did run it on 87 oct. perf. tune.. so I assume with the 87 oct. tow tune I should beable to peel some time off, maybe a 7.5?? Being more lowend? I'll have to try that next time I get the chance.

The Tow program has a little more low end but also has shift torque reductions in place, so you may actually lose a little time because of the of the power drop during shifts.

Originally Posted by AZFX4

I do have a question about running the 0-60. My buddy has a Edge and when he runs his 0-60's, even if he surpasses 60mph, it stops at 60mph. When I run it always stops after. When I ran with canned tunes, it would stop at 60.4mph. This morning when I ran the 7.8, it stopped at 61.8mph I believe. Is there a reason for that??? Being digital, I would think the computer could stop it exactly at 60mph and that time.

Not sure. I do know that the programmer can only read a few samples per second and a 60.4 wouldn't be a terrible concern, but I certainly wouldn't expect to see anything in the 61.xx range. Do you have anything else installed in your vehicle that could be slowing down the PCM/Programmer communications? I'd be happy to take a look at the firmware, but want to make sure there's no external influence.

Take care.