Someone with P0304 codes posted a log on LegacyGT.com:
http://scandepot.net/viewscan.php?pk=4951There was talk about creating something similar for the RomRaider site (back when it was Enginuity) and I still think that would be great, but this looks like a pretty cool thing in the meantime.
(The guy's problem was apparently a bad ignition coil, he posted a picture and it's coming apart. But that's beside the point.

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