controller

I have a stock 2009 and would like to get an exhaust and maybe efi controller? should i get a slip on and a controller or can i get a full exhaust without using a controller? I've looked at alot of exhausts, mostly trail ride and have some good hill climbs to hit, need some more torque. Any...

So I bought a Two Brother's EFI controller (from the forum!) and I've been playing with the settings... My current setup on my KFX450 is: K&N intake, no airbox lid stock motor Stock pipe (and I'm really close to sea level... Michigan) My current settings for the programmer are: cruise: +1...