Thanks for that info. I ran my scanner on it last night and found the "Smoothness" values in the live data. I don't know what I'm looking for there, all 6 cylinders seemed to create about the same patterns or values, depending on how I had it displaying. I can only see 2 at a time, so I wasn't able to compare all 6, side by side in real time.

I also checked for codes and it's not showing any, so I'm a little stumped at the moment.