Continuing ignition timing debate from the 416 thread.

92b said
That's not always the case. Look at the charts I posted.

I definitely don’t like using definitives and rarely say “always” or “never” when talking about tuning stuff. We agree.

Mattax said
To do this fuel would have to be pretty close to where it’s going to end up. If it’s significantly leaner or richer then it will show best timing for that condition. Isn't this why we try to get a baseline timing established first? Then get best fuel mix for it, then try tweaking the timing a bit.

Yes, like you are completely aware, fuel and timing go hand in hand and it’s a constant back and forth to optimize both. They continually effect each other.