Originally Posted by
GHuggins
Pulse Widths.... Ideal pw's to retard it is in the neighborhood of 10 being min to 13ish or more...
So, if it comes down to it in a situation like this - choose as much of eoi as possible while still maintaining a hot intake valve sitting ratio... Fuel needs more time for heat to vaporize it with rpms - at idle it's got the heat in the cylinder for the most part / with throttle and rpms you have turbulence, but not as much heat and you still need good vaporized fuel to start the burn, but you still want "rawish" fuel to slow the burn acting like an octane booster... That parts theory, but why I believe this works so well and allows for more timing and everything to be used...