Ok i got my truck altogether tonight with stall, shift kit, and cam and took it on a test run . It seemed the tc never wanted to unlock at 70 mph (2500 or so rpms) it was on cruise up hill down hill straights never unlucked. Also when i stepped on it at 70 it shifted down to sencond for a sec hit rev limiter then 3rd back to second the went and took off. I got a nelson tune but is my compter still learning everything?? Any help would be great. Thanks

 

a converter change should not effect lock-up, but it can effect shift points because it is lighter than stock and therefore tends to rev faster