I know a few offer TCM tuning. How much of a diffrence can it make? i know when i was at the track there was alot of delay in the shifts. I was running the PPE 350 tune which does not have defuel but it still took forever to shift. Even tow haul did not change the shifts. Im looking for quicker shifts but i also dont want to change TCM's all the time. I just want to put it in and use it for driving also. I dont care how hard it shifts all my other cars i raced used to have them neck breaking shifts 
