You just want as much ignition advance as you can get without running into det. I would expect you could get another 2 or 3 degrees at the bottom end to lift the torque curve a bit but it's a trial and error thing so you'll have to play it by ear while all the time checking for det. You might want to trim out some fuel too but it will all take time to get right. The upper end looks ok in terms of advance, that's where your cams will come into their own.
If you try 60mph in 6th then drop to 4th and floor it. The only reason i was asking was to check if the overboost function was still active or if they've mapped it out and that's a good way of getting it to reliably activate.
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Took the longer route home and made some runs. This link is 6th - 4th and then WOT.
What do you make of ignition advance on cylinder 1 going from 0.5, dropping a touch to -1.5 then up to a peak of 10.5 deg?