i'm still trying to find out where is the issue that all us turbo guys have with " too much timing advance". for what i have read, i read no one on this board blowing up their engine due to that, just detonation due to a lean condition on fuel parts related issues,is all i've heard and read. if i was to slap on 52lb injectors,have the right disk on the SFMU(1:1), lower the fuel pressure, and adjust the SAFC a little leaner to compensate, maybe it's not an issue with too much timimg advance as long as you got the right amount of fuel to what you can handle @ your max boost.
if you're going 20+ psi, i think the only issue we got is not running race gas due to lack of octane. i'm currently not having any issues on timing advance for awhile while 15psi, sometimes i even spike to 17psi, and no problems. just sucks my clutch is shitty, but i don't think it's a big issue, unless you're truly making 350+ HP, which is then you should be concerned while making high boost 20+ psi. my goal is 450HP. i don't know, if you guys could clarify that, please i like to discuss about it.