figuring out advance timing

With EFI you can get kind of crazy with timing because you’re not limited to the 2D curve from springs and weights. And on the holley there’s a bunch of timing table multipliers. Like start retard. Let the engine tell you what it wants. If it idles best at 12 degrees use that. If it idles best at 30 use that. Then use the cranking ign table modifier to yank timing for starting. The critical values are still the same though, wot and peak torque. That’s where some caution needs to be taken. The cells around peak tq are where you most likely hurt the engine if you get too crazy with it. Be conservative there.