[san rensho]

Originally Posted by JFP in PA

The major drawback to both the Durametric system and the factory OBD II manuals is that both are designed for someone that already knows what they are doing, which tends to make them non DIY friendly at all.

As was once observed, it is very easy to look like you can walk on water when you know where the rocks are, the trick has always been to find the rocks..................

Exactly. Unless you have an understanding of modern computer controlled fuel and ignition engine management you won't be able to make sense of the data from the Dur.