King Quad Exhaust/FI controller

I didn't post this in the tech forum because it is not Can-Am related. But I own a 2007 King Quad 450 and am hoping to install a new slip-on muffler and FI controller. This is the first utility quad I have ever owned, always had sport quads before and went with DynoJet kits and Yoshimura exhausts. But I've never tackled a utility hop-up before and was hoping somebody here had experience with Suzuki utility quads and what products work best.

Jerry