Quote:
Originally Posted by micondie
What jumped out at me while reading this is that if it takes less throttle opening to maintain the same speed then your motor is taking in less air and since you have the same air/fuel ratio, you are using less fuel! Or is there a flaw in my logic?
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Yes, I'm afraid there is a flaw in your logic. Read carefully. What I'm saying is that with reduced restriction elsewhere in the intake, you're now flowing the same amount of air at a lower throttle opening, so nothing really changes.
This is easily visualized if you take it to the extremes. Imaging blocking your intake prior to the throttle body with a plate with a 1/2" hole in it. Imagining you could even support the engine with such a hole, you would need to open your throttle very far to reach the same airflow you would have had without the plate at a smaller throttle opening, however once you open the throttle to achieve the same flow, everything is the same. It works the same in reverse with less restrictions instead of more.