just that, my buddys got a 650 and wants to power it up a little, low budget sorta thing thow. so what im asking is, is there any thing like on other quads you can grind out the exhaust welds and gain some and remove the choke and gain some, what can we do for free or cheap to gain some ponies on the 650, its the full baja package, if that makes any difference. and were not looking for more speed just more power.