I don’t know if I’m qualified to comment, but I run three DCOE40s on my TVR, and have been through them a number of times. The engine is a Triumph TR6 2.5 liter straight 6.
I found that I’ve gotten a lot better low RPM performance by running significant advanced timing, even at idle, and then limiting total timing at high RPMs.
But as Doug has pointed out, I have had people behind me, complaining that their eyes were burning after following me for a little bit!
Rocky