Still trying to map out a timing curve

KitCarlson said

I hope the plot shown is not what you are using. The stair step at the low end may lead to a few problems. Things like hard starting, poor take-off, stalling at idle, poor idle speed regulation. But I never worked with MSD, so I might be wrong since no mention of those problems.

While you suggest the system does 25 degrees of control, the timing map suggests 35.

Click to expand...

You have to remember that this is backward. The ignition retards timing. I have it locked in with no centrifugal advance at 36 degrees. It is taking away 25 degrees of timing at start up, leaving it at 11 degrees. Then between 600 and 1000 rpm, or idle, it is taking away 17 degrees leaving it at 19 degrees idling. Then I have it ramp up the timing until all in at 4000 rpm.