do yourself a favor and get some drag radials. weld makes a 17x10 wheel you can use and hoosier makes a 275 40/17 tire
you'll hook up fine with the DRs and you also be able to turn off the ESP. the car will 60 alot more consistantly with th drag radials. get the car consistant and then we'll work on going faster
sounds like your car is hitting "limp mode" nothing to worry about now.
here is a video of my car with my son driving. notice the 60ft. i think this run is with my M&H DRs on bogarts but i aslo have hoosiers for the 300. he finished 2nd in pts at the local track his first year driving
[ame="http://www.youtube.com/watch?v=Jkmo6s6kHOk&feature=player_embedded"]750 HP McLaren SLR vs SRT8 300 - Drag Video - 10.31 @ 136 mph (219 kmh) - Road Test TV - YouTube[/ame]