+1 for Ivan's here too and welcome to Fazer ownership. One of the best bikes ever made, but even better with Ivan's jet kit!
I didn't even bother with an end can (I like to speed inconspicuously and quietly!) and it transforms the bike and makes it much more pleasant to ride. If you've had bad experiences with jet kits before or thought they don't do a lot, I can assure you Ivan's kits are in a different league.
You get perfect fuelling, much better throttle response, it's smoother, doesn't need as much choke, a good dollup of extra power in the low to mid, an extension to the power curve at high revs and at just over £100 and 3 hours to fit, it's a better spend than an end can. Although, end can + Ivan's is the ultimate. You don't need dyno time or anything either, just fit it and enjoy.
Jeezuz. You'd think we're all on commission the way we go on about it round here! (joke, it really is worth every penny)
http://www.ivansperformanceproducts.com/fz1.htm