Hey harry was just wondering how that tgb adjustable cdi works that you sell on your website,also should i get a tach so i can see how high the settings are on the cdi??i just started messing with scooters at the begining of the year,would i benifit from getting it im running an mrp pipe now with stock cylinder,thanks again for any info you have about the cdi you sell and how to use and how high of rpm to set it at if i was to buy it!!!