Timing retard is also removed to make engine rev faster. Throttle restrictions are removed and this gives a considerable power gain in lower gears.
With the default factory settings, the ECU is setup for use with balanced performance and fuel economy by remapping the ECU, we can make an engine run more efficiently or create more power by increasing efficiency of the engine.
RELATED ARTICLE: Motorcycle Engine Control Unit (ECU) ExplainedĮCU’s chip stores programs as maps that controls the injectors on factors such as how much fuel to supply, when to fire the spark plugs, also monitoring every possible aspect involved in running of an engine. Programming an ECU is removing things like low RPM power restrictions, closed loop fuel maps, errors when upgrading parts and a plenty of other options. The greater the RPM, more the ignition timing would advance. ECU tuning is an art of cracking the factory restrictions and making it better, which is something similar to jail breaking/rooting a Smartphone and enhancing its performance. Just like carburetor tuning, this is not an easy process. Today, in this modern era where Fuel Injection System has taken over good old Carburetors, the power delivery is managed by Engine Control Unit (ECU) that electronically controls a series of actuators on an internal combustion engine to ensure optimal engine performance. It all started in old grand days when motorcycle engines had carburetors a kick-start to fire up the engine, turning a couple screws gives a noticeable performance gains.
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