If there was any company that dealt with banshees in the entire world that I would stay away from and not listen to. It would be Trinity Racing. Single carb kits increase low end hp and torque slightly. The biggest thing they do is increase acceleration. The downfall to them is, loss top end rpm, hp, and torque. Most of the guys on here who run them, usually have mismatched pipes, reeds, and porting that really don't make the 2 into 1 intake shine. Yeah, it may be better than stock carbs. When I switched from the single carb to the twins, I picked up 4.75hp from the midrange to the top end, and I only lost about 1.2hp on the bottom. Thats with all my low-mid parts on the bike. You take a mid-top built bike, and it will cripple the topend even more, and narrow the powerband window. So, if you search the forum, you can find all the dyno testing threads on this, and the reviews I have done from actually riding the bike as well.