Unless you got as modified intake system (intake tube, manifold, port matching, a bigger TB) you won't see a difference in air flow. The engine only draws in so much air due to system restriction and volume of cylinder. It won't increase performance, but if it anything like a resistor then it might fool the computer into thinking its drawing more air and the computer will compensate by adding more fuel, so you might think its more powerful, but you are actually losing performace and gas mileage
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