Ok so this seems kinda weird to me. I just bought a full Muzzy system for my '01 ZX6R. When I received it, I was a little surprised to find that all the pipes were about half the dia. of the stock pipes. I mean especially the mid pipe. My stock pipe is monsterous compared to the Muzzy. Am I out of the loop on something here? I know bigger doesn't always mean better but this is drasticly smaller. Any help or explanation would be great. Thank you!