Ok i am gonna ask a million dollar question. First off mods are.... 04 banshee with mx ported heads by herr jugs in cali, 4-mill hot rods stroker crank, 65mm piston kit, 34mm keihn carbs w/ clamp on filters, timing set at +4, and i believe 20 cc domes not sure but they are by chariot. I run on 93 octane at 32:1 ratio. Currently i have dmc aliens on it that were on it when i got it. I was told by the guy who built motor that if i got some cpi's i would gain close to another 10hp. I started to look around and the dmc aliens seem like good pipes but with my mods would i benifit more hp if i got some in-frame cpi's or shearer in frames or just stick with the dmc's? I mainly do hillclimbing and some trail riding. Also kinda looking for more low end power for the trails and hillclimbing currently have a 16 th front sprocket so i know thats not helping in the woods.