Building cars is my hobby so I do know that it is more nuanced, but once again, this does not refute my initial point. You do need some back-pressure to siphon

Building cars is my hobby so I do know that it is more nuanced, but once again, this does not refute my initial point. You do need some back-pressure to siphon back, but the amount is very limited, especially when we compare it to the sheer amount of air mass that those cars are moving. Just so it doesn’t get lost — my point is, sports cars being loud when they’re full throttle is not a problem and never was, realistically you wouldn’t drive them that way outside of a racing track anyway. The fact that people still do it and annoy everyone else is a people problem, not a car problem.