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Originally Posted by taxonomy  If you are not using the full amount of torque (riding at WOT) adding more does not do any good. |
That is incorrect. If the exhaust system changed in a way that allowed for an increase in torque without an increase in fuel being burned then the efficiency and power of the engine has increased resulting in better milage and increased performance.
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Originally Posted by taxonomy ...and I don't think they are demanding the maximum rate of change in RPM (throttle response) |
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Originally Posted by taxonomy Throttle response may be increased or decreased depending on your throttle position, and RPM and how the pipe interacts just there.
If there was, theoretically, an increase in throttle response we would have to demand it to make use of it.
In a situation where we roll on the throttle I doubt that anyone here is doing it quickly enough so that we are going to ask for more response than the stock bike is capable of delivering when the bike is leaned over exiting a corner considering the type of hardware that people are using on this list. |
A "rate of change" is an acceleration and that is not what throttle response is. The characteristic you are describing is more an acceleration profile which is a function of a lot of variables outside of the engine. Throttle response is how quickly an engine increases its power output in response to an increase in throttle input. Ideally you want the delay to be as small as possible (better response) so the engine closely matches what your hand is instructing it to do.