jets

Yes the Blaster has a CDI box but as far as I Know it does nothing more than control the spark. In fact, they make aftermarket CDI boxes to change the spark. I know you can get them on ebay. As far as the jets, you need to tell us more information. What are temperatures like? What mods do you have? Are you running with the airbox lid? What is your elevation? What carb are you running?