[8vettes]

I took my 2011 srt in to the dealership a couple weeks back to get a few little things taken care of before my warranty expired and when it was in they offered to do a computer update which was covered under warranty . I figured I might as well have it done as I understood it was a few hundred to do it after warranty.

Mu issue started when I got on her a bit the other day. before the dealer "updated" my computer my car pulled really strong and in fact when nailing it in 1st gear would spin the tires down the road like I was on a wet surface but yesterday I went out for a ride and when coming off a light on the highway I jumped on her and there was barely any tire spin and when I hit second the most I got was a little chirp instead of them breaking loose and almost felt like I was dragging an anchor. all this while traction control was OFF.
my question is could this update changes one of the things I loved most about this car namely the power and if so can the battery disconnect procedure take me back to where it was before and if not what are my option . thanks for your input

 

[8vettes]

PERP I am not original owner on the car but when I bought it from original owner he never mentioned putting a tune in it . there were a set of Corsas installed but nothing else as far as I know . also he gave me everything that came with the car including the original exhaust system im pretty sure he would of mentioned it . Am I wrong or is the only way to add a tune to a 392 is with a Diablo tuner which if he used would serve no purpose after it installed in 1 car it's locked to that car so giving it to me with the car would cost him nothing? please let me know if im wrong on this.

If by some chance there was a tune on the car I have to get it back because compared to before the dealers update she fells like a slug.