Im at 17-18 being very friendly to my GS. For real tho guys does spark plug gaps affect gas mileage that much. I know its needed for good performance but MPG's???
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05-15-2011
Im at 17-18 being very friendly to my GS. For real tho guys does spark plug gaps affect gas mileage that much. I know its needed for good performance but MPG's???
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