Spark plug gapping question?
 

Gonna change out my spark plugs, what should i gap them at for best performance?

Unless your engine is modified and/or you are running something other than pump gas, you’re probably better off sticking with the manufacturer’s recommendation

I am fully modified running 93 octane

OEM stock is fine

Spark plug gap will relate to secondary voltage produced by ignition coil or coil pack.
If you want a "hotter" spark, that means upping the secondary voltage AND opening the gap.
If stock gap is 1.00 mm and it takes 10,000 volts to jump that, then going to a 20,000 V coil will still result in a 10,000 V spark because that's all it takes to jump 1.00 mm.

Do not gap iridium plugs. Look at them, if they are not smashed, install them.