Harley Davidson Single Fire Ignition Installation : Weekend Wrenching
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Adding a single fire ignition to your motorcycle is a must do when adding cams a big bore or engine work. But it also a good upgrade for unmodified engines as well. It cleans up the idle, eliminates back fires allows you to adjust advance curves and rev limiters and improves the efficiency of your engine. The installation is basically the same for nose cone Shovelheads, big twin Evo's and Evolution Sportsters.
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