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no , that is not how the systems work
So by restricting the air intake on purpose it will run fuel-rich more often when you throttle too much for the (less) air available. At best you end up doing the same thing you could achieve by being lighter on the throttle, and at worst, you're running fuel rich more often.
no , that is not how it works
if there is less air because of a restriction , the restriction becomes the throttle . the ECM will provide only the amount of fuel to match the amount of air that it counts . the ECM counts the air flow with either a calculation in speed density systems or more directly with the input from the MAF sensor .
the ECM only provides fuel to match the counted air
the system DOES NOT run rich because of intake restrictions .
intake restrictions do reduce maximum power output by reducing the maximum
calculated load value
intake restrictions have zero effect on fuel to air mixture
and
zero effect on fuel trim
the system can change mixture based on load depending on it's design.
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