Just picked up a bone stock(other than K&N's) 00 zx12. She's plenty fast for me but I'd like a better exhaust, was gunna do a slip on, but I see the Muzzy system is under $500, figure why not spend the extra money and save some weight, I already have a Power Commander that came with the bike. Read a few posts about a flat spot in the tuning though, should this make me shy away from the Muzzy? Or has this issue been fixed? Thanks ya'll. This website is a wealth of info, a little too much info, just didn't have the time to troll thru all the posts to find the answer and most of the posts are dated.