I know a lot of cars here
can match their exhaust volume with performance but I often see cars around here with a big
LOUD exhaust, way overkill and it makes the car look shlte. When they floor it the sound makes the car sound faster than it looks....makes me laugh. Quieter matches the cars performance in most cases. If it's real loud, even with a modded engine, it can still look like the car should be faster due to the engine noise. Having said that, Madeline will be running DMH electric exhaust cutouts.
Not sure about up there but down here a car's exhaust note can't be deemed noticbly louder than how it would have come from the factory. A lot is left to be desired with this rule and it usually comes down to simple judgement. A 440ci with no mufflers will obviously fail lol.