I used Google to find a bunch of information, pictures and video on how to set my 1999 5.9 Magnum cam sync for initial fire up. After I got it up and running, I used a borrowed Matco Tools scanner to verify the setting, which was almost dead on, but needed some fine tuning. A lot of guys have to go to someone with an expensive scanner to have there's checked, which usually means the dealer. These things are a few decades old now, so a lot of places have no idea how to do it anymore.