I just set it up a little while ago. I was only playing around with it, there is still alot to figure out. Plus its 12 am. For those of you who are wondering what I am talking about Autotap is a code scanner/data logger, that incoparates a lap top. Pretty neat stuff. Well anyway my car has been running like crap for a little while, and I did a quick data logging session to play around. Below is a little snap shot of a play back of what I did. There are literaly hundreds of other parameters I could have used. I made three graphs. The top is RPM for fun, and the other two are O2 sensor outputs. As you can notice one is working and one is not. Looks like I found one of my problems.
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