Screen shot of my Good Fuel Spark (GFS) table on PowrTuner:


Now, same table looking at Eddie's Tiny Tuner on the Web:


On both shots, starting at 80 mg/cyl, the mg/cyl increments by 40 up to 560.

But then the last three rows in PT say: 600, 640, 680 mg/cyl

The same last three rows in Tiny Tuner say: 680, 800, 920 mg/cyl

Which mg/cyl numbers are accurate? 600, 640, 680? Or 680, 800, 920?