Yeah, just like jack said. I guess I didn't make myself clear enough.
I meant to say lower all of the regular shift points but leave the 1-3 torque converter lock points alone since in regular driving you will rarely see it lock there. The main ones that will save on gas are regular gear shifts 3 and 4 and the 4th gear converter lockup point.
FYI: the 4th gear torque convter point can be lowered up to 10 mph. I think this makes it lock around 35-45 mph.