and now at 77k, i have random misfires in cylinders 2,6 and 7. Mostly at idle and under load on the interstate at about 70mph and beyond. truck won't even get past 80mph anymore. I took the edge back to the stock program and replaced the fuel injector and coil pack on cylinder 6, because originally it was only misfiring in cylinder 6. Now its like a virus and spreading and i have no idea why. Still using premium gas, but i don't think that would cause this. I'm so fed up with this truck lately. I wish i would have bought a dodge with a hemi, at least it would have looked cool and i could say "yeah, its got a hemi."