i played with it all day and if you set it the correct way it will shift too hard for cruising around, but about right for wot. so i sacrified wot rpm for somewhat decide cruising shfts and wot is around 4300 1-2 and 4400 2-3 it seems to flaten out any higher than that at 11.2 a/f at 18 total timing 10-12psi 210coolant and 90plus outside...im using the f.a.s.t to data log runs. it may need have the trans addressed as well. or the tv needs to be replaced with new cable it is original.