Quote: Originally Posted by MarksPTgt
I am absolutly not an expert, however I think that some type OBD-port logger or scanner is key to a great running car. There is so much info locked in the PCM that you need to watch that it is just as valuable as an EGT for tunning.
No questions about that. But this was for the basics only that could be done in a day sitting in your driveway if need be. Now with that a OBD II scanner (gauge type works as well) you can monitor several things (knock and timing come to mind right away) that could leed you to a problem much quicker. The basics and then you have to move from there to either a OBD II test tool (can help narrow down the mechanical problems that I listed) or it can even help with a bad tune/bad gas issue. There is so much that could have been said but the basics were the main reason for the post since it seems like lots of people have forgot about them.
