have a sportsman 500 efi 2007
looking to see if putting on a new exhaust will do anything
anyone have any idea's or input?

 

You'll get a lot better sound and some added performance. More noticable gains(still not much) will be with a K&N filter and clutch kit(more low end power and lose a few mph on top end). You can add by converting to an HO. All that together will make a difference but no mods by themselves will do much.

 

If nothing else, it will give you a much better sound, but with my big gun, I did notice a little better throttle response

Here's a sound clip, I know it's a 700, but it'll give you an idea: