im probably off by a mile, but this sounds like something some mitsubishi guys who are 1000% sure of their tuning abilities do in an effort to prevent their cars from pulling timing back cause of "phantom knock" events, if thats what its referring to, i strongly recommend against it, cause like it or not, the knock sensor really is your friend and has saved many a motor from melted pistons/burnt valves, so on so forth...like i said, thats if im even close to what your talking about, if not, well, then theres a little factoid of info you can use anyway