Tune it back to stock Trans settings and Use a B&M Shift+ Never had a shifting problem from my boosted ECO. I broke a Trans due to heat/friction with regular ATF, since using AMSOIL in the replaced trans it has went 20,000+ SUPER HARD miles.
James, I have shared my trans tune with a few people. Seems to be working great for them.
I used Mikes tranny settings on my buddy's 99 M45 Z24 auto. Very nice difference. We had been using GM M45 auto settings, but Mikes settings really made a difference. This is on a stock tranny with alot of miles and abuse, stock converter. Near future he will be putting in a brand new auto tranny with a Yank converter, and tranny cooler. Will be nice to see the difference.
My latest tune is WAY more aggressive than the one I sent out to everyone. I think I may write up a how too now that I understand what tables actually effect things, and what tables do nothing at all.