Upon purchasing a new bike, which I will hopefully be doing soon, is it better to break the bike in with the stock exhaust or can you stick a slip on right away. When I broke my 01 R6 in it had an Akropovic on it. The guys at the dealership said it was fine, but like I believe them. Since the R6 was stolen I never got a chance to take it in for it's first valve job, so I never really learned if I had broke the engine in properly. I want to get a slip on for the new GSXR but I don't know if I should wait to get a slip on or break it in with the stock pipe.