EFI or Blowthrough?

Fst73_410 said
I think efi is good if you get a good system. Bigs3 or megasquirt, will help in long run if serious but if not ultra competitive, I would think carb is great

so how does the megasquirt rate compared to others. what is Bigs3.
a member here is using the fast xfi 2.0 with good results. pricey though.