Hey,
I have installed the Bill Ballance Pro Series HMF...full exhaust, and programmer. I just installed the full exhaust and rode it for one days ride....I could tell a little bit of difference, but not all that much. This is just my opinion based on experience, a slip-on is worthless without the head pipe to occompany it. All of these companies claim an 11hp gain with full exhuast system, I would like to see that proof on a dyno. I'm feeling okay with the idea of 5-7hp gains with full exhaust. I know that the stock exhaust on the 700xx restricts a lot of air flow...and a bolt on exhaust system is one of the "big 3" upgrades done by most owners. Thats enough of my two cents, I'd seriously reccomend the full exhaust and the hmf programmer...gotta get that beast some more fuel! lol