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Message: <blockquote data-quote="Rednaxs60" data-source="post: 231826" data-attributes="member: 4617">I have an answer for you, but having trouble formulating it so it makes sense.Short answer is it aids in fuel efficiency and engine performance.  Need to take into consideration fuel injector staging - Port or ITB, engine timing profile, size of engine and number of cylinders, fuel injector data - open/closing times/duty cycle.  It's all interrelated.It appears to be complicated but it really is not, a lot of engine tuning parameters are straight forward and set in "concrete".It's a matter of calibrating the engine tune for best performance and fuel economy, or changing a specific EFI component to achieve this, remembering not all engines are created the same, or equal.  Might need larger or smaller fuel injectors.  I am at a point in my project where I am looking into coil dwell time and will adjust the coil dwell time for best fuel economy and engine power without going so far as to destroy a COP unit.  Same issue different parameter.Hope this helps.</blockquote>