HPS is a great can. I have one on my 07 summit. With any can you probably won't make hp but you will save weight, which will increase you power to weight ratio. I do want to give a plug to lower noise levels. The problem with some cans is they reinforce the "greenies" belief that snowmobiles are bad. With land closures threatening our riding areas, the last thing we need is loud snowmobiles holding us back from the riding areas we love. What is more important, a loud snowmobile or being able to ride? I know what my choice is.