stock or not?

[THEHOS]

I was reading a forum elsewhere and they were talking about a shuttering feeling in the higher gears with WOT and programmers set on high possible slipping in the tq converter. Well I have felt this shutter but don't have a programmer is there anyway to tell if the 1st owner reprogrammed it and left it tuned up or is there anyway to just reset the computer to factory settings?

[05_LLY]

Some one with efi live could tell you if its been reprogramed! As for the shudder i have nevver experienced it so i cant help ya but i'm sure some one her can!

[ob_1jr]

I'm sure the bigger tires don't help the tranny at all. You could be slipping it a little. the shutter could possibly be caused by a dirty fuel filter, but without actually experiencing it, it is hard to tell.