Hey beastman if you didnt see my topic in the suzuki forum, heres the deal. I race my friends yfz-450 today and smoke him worse than he knew what hit him. I was probably 6-8 quad leagnths in front of him mybe more and i was still pulling hard at 300 feet. It was easy putting that system on. All you need is a K&n air filter which you already have. I got the kit from Boondockers NOs for 695.00. I am running a 20 hp shot right now. Beat the yfz - so bad thinking about going down to a 15hp or 10hp shot so it doesnt do as much damage. I dont think it does that much damage n e ways i just use in 6 second burst at most at a time. But i love it man. It was a good investment. Oh by the way when i didnt use my nos i was only about 2-4 quad leangths behind him. But i just got the nos and i am still getting used to the hole shot.