Bigger throttle body on an N/A will most likely result in a more sluggish throttle response. Air velocity is higher the narrower the aperture but at a lower volume (You get the air in there faster and it's cooler). Air is charge is denser but also slower with a larger aperture... it's also in there sitting over the engine longer. Tune your intake for your needs. Physics my man, physics... and while we're on that subject, go ahead and put back the Helmholtz resonator that I'm sure you're also missing.
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