[Masteryota]

As far as ignition advance goes, the more modded the engine, the more effective the advanced timing is. The reason you guys are seeing minimal changes with stock, or near stock engines, is that the advanced timing has very minimal effect. High compression, high flow, high RPM engines will benefit most from advanced timing. I like the idea of the adjustable timing advance based on the idea of trial and error and fine tuning, but I know they can be quite expensive compared to simpler units.