06 srt8 18 update problems

[guidosrt8]

i just installed the new update and my car is much slower on takeoff and the shift firmness is all gone in update 17 my car shifted hard and now it feels stock i reinstalled and checked all settings and still nothing i am going to switch back to 17 and see if it resolves anyone else with this problem

[Mike_Levy]

Sounds familiar. R18 totally messed up my tranny settings. Its back to its not wanting to downshift attitude. And now that you mention it, the car does feel a bit sluggish. For whatever reason, its not smoking the tires getting onto the highway anymore, although that could be caused by the lack of a downshift.

[guidosrt8]

i might have reset tcm also how long does the tcm take to relearn your driving habits