My Bonnie is generally a hard starter, due, I think, to the Procomm igniter with its extra 3 degrees of across-the-board spark advance. Recently, however, it became so difficult to fire that I had to bump it down a hill, which always does the trick.
With the carbies fairly well sorted, I tended toward spark as the culprit, so I decided to try the Nology coil, which fixed things right up. That’s fine, but, aside from the additional cost of a new stock coil, one of those would have worked as well, right? Worked, but not as well, I find, as the Nology.
Some here say, “no difference”, although someone noticed a smoother idle, as I did. Others suggest that the Nology benefits those who have engine mods, which would be me, although not extreme, no big bore high compression FCR Screamin’ Eagle (oops! wrong forum). Just the Procomm, TORs, advanced exhaust cam, pods and re-jet to 150 mains (using the WOT back-off test).
So, what I experienced was smoother power delivery with a new extra rush of power starting at about 5500. I’d like to say that it “exploded”, but I know that that term is reserved for the Twin Power igniter.

So how about “shot out of a canon?” The ton comes up quicker and smoother.
Either the stock igniter has been bad or marginal for 47,000 miles, or, as designed, it’s not up to the additional needs imposed by mods, i.e., the Nology is “better”. Either way, it works for me.
- Zan