Scotty, I have a 1997 Acura RL with 222783 miles at this time. I recently replaced the battery, I have no codes before or after replacing the battery, but not the cat and evap systems remain as not clear on my scan tool. I expected this would clear after some driving, but a few hundred miles of mixed highway and city driving has not satisfied those two systems. Any ideas or recommendations ? I did see your video on cleaning a dirty cat with a good soak, but I am a bit uncertain that this will correct my condition on the cat, and I am uncertain which way to go with the evap system. I do live in California so two systems not clear is a concern of mine. (one of the problems of living on the left coast)  Big Brother 🙂