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520 Posts
low compression piston 8.5 to 1, gt12 turbo , external waste gate, megasquirt controled with a map, intercooler. You know the part used on the polaris iq turbo (snowmobile) 140hp stock and 750cc. It just crazy the way that sled pull down low to 8000 rpm.The hardest challege is way get a ignition with a trigger sensor..