Before I get flamed it should be understood that I'm aware of the commonly accepted practice of running richer AFRs as boost increases. I understand that running on the rich side seems to have a cooling effect that helps prevent detonation. I came across an article that advocates a different idea. Instead of running 11.5 afr, 15deg. advance and 15 psi of boost they advocate something more like 12.5-13 afr and 10-5 deg. advance on 15 psi for example. The idea is that running a rich afr has more of an effect on burn speed than any kind of cooling effect. According to the article a rich afr only delays the combustion event so that there is less chance of multiple flame fronts/detonation. I guess the only way to know for sure would be to do a before and after and monitor egts and check for Knock. Has anyone had any experience with an approach like this? Please don't reply if you're just going to use a "NO because NO" response but I would love to hear any ideas about it.