Okay I've seen and learned about most of the mods out there but I am just beginning to touch the idea of Turbo's and Ignition timing advance. First of all. If I advance my ignition timing, how much of an increase in HP could I expect. Second, for Turbo's, do I have to adjust timing just like when using N20?

 

well advancing the timing will lean your air/fuel ratio out and in case give you power. but if you want to run safer retard the timing and run more fuel or safer