spark plugs?
installing zex dry 125 shot #82015 should I run one or two step colder plugs, and what brand of plug?what gap? And does colder plugs affect performance and mileage for every day driving with normal timing?
installing zex dry 125 shot #82015 should I run one or two step colder plugs, and what brand of plug?what gap? And does colder plugs affect performance and mileage for every day driving with normal timing?
