wow. I guess I'm lucky. got my Gt dyno'd a year after i got it and it was making 290hp and 314tq with only SLP Loudmouths and no other mods at all. was dyno'd in late fall on a cool day. was at atco and made my first run. my et was an abysmal 17.3 at 101mph. I was looking at my speedo and thinking it was my tach and stalled out at the line. I felt like such a dumb azz.