I've no doubt the OP has had another 3 bikes since this post!! The fuel mod work s and it's an improvement from stock but what you have to ask yourself 'Am I in it for the long haul or just passing through'

If it's the latter then the fuel mod will do just fine but if you are looking for more then it has to be a PC its a league better,of course that's assuming you have the aftermarket cans,snorkel out,DNA 2,holes(correct size) in the airbox and then you will have a different bike,miss out anyone of those parts of the jigsaw puzzle out and you will get less.

There's another thread running on here about 2/1 pipes if your looking to make your X as quick as possible avoid such like the plague its a thing for off-roaders because they kill what little top end you have,having been there done that I learned the hard way.