PSIKO, I wouldn't compare AdamQ's and mackas/adam32s figures with rob77s casue they were all on different dynos. If the figures of the others cars at the dyno day fitted in, I'd put it down to another high reading dyno. But the thing is, all the other cars have reasonable readings (I think), but robs doesn't fit in with them. The title on the bar graph that says "Compensated Power"... reads like compensated for drivetrain loss to me.
Hicks, true enough about 4wd/2wd, but checkout the figure for the other R33 25t that was there.
Not trying to beat you down here rob, just want to help you get a reasonable figure.