He could just keep checking it like he was……at like 2k……and keep retarding it 1-2deg at a time…….and then after zeroing in on what setting yielded the best power……..zing it up to 6k and make note of what the true total timing was.
I thought on the last pull he was at 26*, at whatever rpm he was checking it at.
No he was saying it ran best @ 30 degrees based off either my dyno sheet or info the customer told his buyer. I don't remember it being that low so I hope I have it recorded in the dyno data, but it might have been handwritten. J.Rob