Originally posted by "JayZ31T"
Vehicles with stock intake plenums, I agree with your opinion. But, If someone were to custom fabricate a plenum and size the intake tract equal to take advantage of the increased flow. Horsepower would be gained.
Only if the motor needed more air.
Example, Only so much air can flow through a 2 inch tube. Increase the capacity. Increase the horsepower.
Unless the motor doesn't need more air. A 300 CI motor will ONLY ingest 300 CI, a turbo still provides it with only 300CI of air, but it is much denser.
Also, Why do Mustang owners go to bigger throttle bodies, air flow meters, and more fuel? More horsepower?
Why do people buy electric turbo's?
Seriously though, on a NA application, you can use a larger TB (remember, you don't have anything shoving air in, so the motor needs all the help it can get), but on a turbo car, you have help shoving air in, so it doesn't need any help. But also remember that many people with NA motors put way too big of a TB on their motors too. For an anicdote, my friend has a 12 second chevy with a 650 dp carb. We put a 750 dp carb on it, and didn't pick up any ET at all. Because the motor didn't need it.