Originally Posted by
Chip
Yes because if you are running too much ignition advance you make peak power too soon, so to avoid doing that you have to put less advance in than the fuel can take, which makes it lazier.
So if you have run out of gains from ignition advance before you hit det, your cr is too low.
The more boost you have, the more you fill the cylinder, so the more risk of detonation you run (especially on high comp where there is less space so the mixture is more compressed) so the less advance you can handle.
I suspect you are confusing an engine needing more ignition retard when it comes on boost. More ignition retard = less ignition advance
Confusing how some people misuse the terms which doesnt help when you are using.
when you say "make peak power to soon" do you mean the mixture will explode befour, 15 degrees after tdc?
and det being a second explosion after the spark plug has fired.
I was always under the impression that because you were filling the cylinder more it would take longer to burn and theoretically would need more ignition agvance.