BTW I took a look at TunerPro recently but found it to be unsuitable because the tables came out backwards. That is, RPM decreased from right to left. As far as I can tell there was no setting that would allow a different specification.
Because of this, I started looking at how to make the xml markup even more flexible. I played around with it a bit but I thought it might be getting overly complicated due to trying to be to general of a map-editor-for-all-cars-ever-built. You may be better off making it just generic enough to work with Subie roms, but I'll leave that up to you.
I'll attach the snippit I was playing with to give you an idea.
It isn't a finished snippit even, as I ran out of time and had to get back to work
-Adrian