FE3X CLONE said:
It takes a stronger spark to ignite the fuel because it's diluted with exhaust gases (exhaust gas recirculation). The wider gap provides a stronger spark however the downside is that it can also cause the plug not to fire at all or miss.
Everyone I've talked said there's no need to go over .045-.050 gap on most applications. But if it works for you, great.
Have you tried running smaller gaps?
i was always under the impression that the more powerful your ignition the more of a gap you can run.
say if you ran a gap of .010 you would not have a very adequate spark to ignite the cylinder. however if your ignition system is strong enough to produce a spark that can span .060 or .070 that would provide more spark to ignite the cylinder.
your explanation of egr needing a larger gap and no other advantages of gapping wider makes no sense to me.