Going to battle it out with Mitsubishi

[2Point3TSi]

You're main problem isn't going to be the over-rev. It's going to be that Mitsubishi can see how many miles the car was driven and how many times that cylinder misfired. That is where they are going to get you is neglect. Had you taken it in when the light came on or gotten it towed and they could have rectified the problem you would either A) have a running car or B) at least have some record of it at the dealer for that problem.