i recently got a ported tb off an ls1 and put it on my truck...and since then it has been shifting weird at wot...it threw a tps code once and i got a new sensor and it still doing the same thing, it has the following mods

* Housing Ported for Ultimate Flow
* Entrance Taper Bored
* Bump-Stop Mod to Fully Open the Throttle Blade
* Front Throttle Shaft Cut for Improved Flow

i have to think it is because the tb is opening more than stock, and the tps thinks it shouldnt be oped that far. anyone else have this prob?

can it be fixed with a re-tune?