[JL8Jeff]

Bill, can your HPtuners scanning record all the parameters to go back and review? I just ran the car in the dark and there's no sign of any spark issues. I really think it has nothing to do with the spark because it runs so good. I was reading that if the exhaust temps are too hot it will trigger the P0300 code beacuse it can damage the cats. But I would still need to find out why it's lean if that is the problem. The P0300 code seems to be the biggest PITA to troubleshoot. It looks like the car has new O2's and some of the injector wiring and EVAP purge stuff has been replaced so somebody was trying to track down the problem and probably gave up.