I disagree, I would mod the air box, (free) get a efi, and pull the muffler off the stock exhaust (cheap).
eh. yea i guess you could go that route as well. haha the exhaust mod reminds me of high school but it does work.
either way. still the same principles. let the thing breath. then tune.
but with the removal of the muffler, you still have the cats. cats are lame.