Yup what cheese said... I was bummed but he is 100% correct... When I swapped out my pipes I fired her up without any cans on at all and much to my surprise it was honestly louder once I fitted the Akro's. It the restriction in the midpipes thats a killer besides, say you fit a Yoshimura full system on your bike and then removed the can. All your doing is making all sport bikes guys look like the jerkweeds on their straight piped HD's. You'll annoy the hell outta everyone around you and rattle the teath outta yer head... Lets keep the pipes on and show some respect for the sport and for your neighbors and others on the road.
Lets not give sportbikers a worse image than has allready been cultivated...
If your at the track, go ahead, but it will likely have adverse effects on your motors ability to produce power...
Not trying to be a bobo... I can understand the desire to hear your Motor uncorked, but I do not recommend riding around that way... It's a recipe for the Insta-Squid label...