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I think your right about the ignition for sure, checking the logs last night I've got 28* advance at 4.5K and 10psi which seems like a bit much to me.
I hope the injectors aren't too small they're 750cc's! It could be the injection method I'm using right now. On that graph at 10psi the injectors are hitting 62% duty cycle at peak of 15.4ms open time, but they are only firing every other ignition event (one bank per rotation). So I can have them fire every ignition event and that should cut the open time in half. The reason I did it that way is the large injectors don't like openning below 2-3ms so I was worried about low rpms.
I think I'll switch the injection timing to once per ignition event and see how it goes and pull some fuel/timing while I'm at it. I've been thinking more and more about reconnecting the water injection too since last night my intake temps hit 92C. Right now I'm getting 7 or so mpg which is terrible since most of my time is off boost.
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