[davepl]

But the video just says "You don't need to know why it is what it is"! I can't live like that! Granted you do give the numbers, which is great.

I think the rough answer is:

Sample values for this calibration:
For 4 pulses, use N= 3 (Note- 8 cylinder tach setting)
For 3 pulses, use N= 4 (Note- 6 cylinder tach setting)
For 2 pulses, use N= 6 (Note- LSx 8 cylinder & 4 cylinder tach setting)

Both cases we're talking about here are eRod or Connect&Cruise, which will usually be run with the factory tune, not a custom tune, so a converter box is actually CHEAPER than an HPtuners VIN license, right? I know I don't have unlimited HPTuners.

You are right, however, in my case I could have done it because I had to change the VSS output tooth count on the transmission anyway, though. But no one seemed to know that back when I asked!