Agreed that 3 versions is not useful but each has something to contribute ... not just metric, but other additions too? In that light, I will check out the other versions more carefully
I found bugs in my original post (.77m) thought it would be nice to post a corrected version. If I should be posting in some other manner, I welcome your suggestion please.
RPM seems stable and correct in my vehicle.
IDE 17 - sure, why not - it's just that when I got the 328 a few months ago, I didn't hit on the latest version.
What's your opinion of replacing the hard-to-understand integer math functions with the regular math library?