What is carb jetting?
Before fuel injectors there were carburettors. Carburettors regulate fuel and air and mix them together to feed the engine. By changing the sizes and positions of various parts in the carb (jets and needles) you can vary the ratio of fuel to air. This is not as easy or quick as it sounds, but with the help of the dyno and its accessories, the carbs can be adjusted very effectively and will compensate for different exhausts or other modifications.
