Brian,

Finally got around to trying it toady and it worked great. Thanks for the explanation and files. I discovered that I could only use the 6 curve points apparently. I need to calibrate the speed from 300 to 5,000 rpm and would like a few more data points if possible, maybe up to 8 or 10 points. Can that be done easily or is there an inherent limit?

Thanks again.
Pat (GTOGuy)