Why do have to calibrate the revs? Doesn't it just count ignition pulses based on the number of cylinders?
Also, if you want a better temperature pickup, take one of the small triangular covers off the side of one of the heads and drill it for the temp sensor. That's were the race bikes measure temperature at. It's very responsive as it measures directly the water temperature of the head. See items 11 or 21 below:
