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YES YES YES.
It is amazing when talking to laypeople (I’m not calling anyone here that) about making HP they think its as simple as just dumping more and more fuel in. Power is actually airflow limited not fuel as it will only take so much fuel.
The throttle butterfly valve rotates from 0 degrees (closed) to 90 degrees (fully open). At lower RPMs where the throttle body is relatively large compared to airflow required the difference between 80 degrees and WOT might be negligible airflow but your seat of the pants meter feels more power because the engine is making more power from chemical means (fuel) instead of mechanical (airflow). This is why I am hammering away on A/F ratio because there may be no appreciable air increase in the last 10 degrees and this means no pumping losses saved either.
I am surprised that nobody on here talks about reprogramming the ECU or fooling it by altering the readings that the sensors are feeding it. I would think this would be an easy way for a few more MPG.
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