hi guys want to fit a set of race cans to my 07 injection bird but i was told there is cats fitted to the original pipes does this mean i am stuck with the originals or can i still change the end cans for some nice race ones. what does the cats do for the bike if i do change over the cans?thanks guys. also anyone know of any nice race cans out there for the injection bird digital clock bike

 

I have Yoshi slips ons on mine and it has no issues. It actually goes much better than when I had the stockers on. The growl it has is unbelievable. Go for the Yoshis imo.