The problem will be that a couple of pro-FA (or what ever feeder series replaces FA) guys will show up and get flagged for sound
It's easy to add mufflers on production based/sized cars, formula cars are a horse of a different color.
I don't think one track in all of Cal-Club has sound limits... Cal-Speedway is surrounded by city but the nearest neighbor is a rail yard and steel mills. Our sound guy was (he moved out of region and hasn't been replaced) measuring sound for cotton plants. Contrast this with NASA with no sound limits...
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