I'm not a car guy, so I used to think such ear-damaging decibels were necessary for performance but have since learned it's not required even for ultra-high performance road cars that can go >200 mph. While a 12 cylinder Lamborghini Aventador is louder than a Hyundai, when both are idling at a stop light, it's actually barely louder from 100 feet away. And yet people with real supercars almost never modify them to be louder than stock.

My wife is a serious car girl and drives her beloved McLaren well enough to be in the top five on amateur days at Sonoma Raceway. She's taught me that different supercars each have their own signature sound and to her it'd be sacrilegious to mess with such iconic perfection. :-)

She's in a club of other supercar owners that puts on a huge charity car show where members bring over $100M of exotics - and none of those cars are nearly as loud as the sonic assault from one of the hopped up $10k rust buckets that occasionally pulls up next to my wife at a stop light and makes our ears bleed revving their engine. They always want to race "the cute girl in the McLaren" but she never takes the bait. When I asked why, she just scoffed that they're all bark and no bite. Plus she has no idea if the driver is race-trained, if their rust-bucket is even safe to be near at high-speeds or if they have insurance. Her favorite line about engine noise is from when she was picking up her car at the McLaren factory in England. While track-testing it with one of the race engineers, he joked "as engineers, we see excess noise as embarrassing because it's wasted horsepower we failed to transfer to the axle."

The only thing I can really think of is a turbo Anti Lag System that you can get in top-end consumer cars like Mercedes AMGs. It’s that popping you hear when coming off the throttle, you’ll also hear it in rally cars. The funny thing is, the same popping can happen with any car if the timing is off so you sometimes get kids driving around with misfiring engines cause it “sounds cool” even though their car might not even have a turbo fan! It’s one of those things that if they were actually passionate about these machines they’d know they look like idiots, but they’re not so they do.