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677 Posts
IMO, when I do different things to my sleds, I always clean the old plugs or put fresh ones in and go for a rip...usually 4-5 times down a good strip then at the very end, shut-off the engine and pull the plugs out and then see the colors......Usually, caramel color is the best, black is rich= too rich, too much fuel and white is too lean= notenough fuel....Just my 2 cents. :chug:
