
Dyno Tuning
The basics of dynamometer tuning, fuel mapping, and why you need to have it done to your motorcycle Why you need a Fuel Map In a fuel injected engine, and carbureted engines for that matter, fuel delivery is set up for the configuration of your engine. This means that the stock Electronic Control Unit (ECU), which controls when and how much fuel to deliver, via the fuel injectors, delivers fuel amounts based on the stock engine configuration as delivered from the factory. An engineer developed this fuel delivery for the stock bore size, stock intake valves, stock head gasket, stock cam degree, stock crank, stock exhaust, stock exhaust baffles, stock air filter, stock air box, etc. Basically, the fuel delivery system in place is designed for a bike off the showroom floor. If any of these items are changed for better performance, sound, style, or for worse, engine wear, it will change the amount of air the engine can/will take in and push out. This change in air the engine pumps in a