> Both of my cars are stock and are like fireworks going off if I lift off the throttle. So this isn't just a modified car thing, a lot of cars made in the last

> Both of my cars are stock and are like fireworks going off if I lift off the throttle. So this isn't just a modified car thing, a lot of cars made in the last 10 years pop, bang, and fart from the factory. That's fine, happens in a lot of performance vehicles. Some people just do stupid stuff to artificially increase the amount of noise. Some of it is illegal (like removing the muffler) and some of it is just rude (like setting the air-fuel ratio to be far too fuel-rich). Some engines are naturally a bit fuel-rich, especially performance engines, but some people just change it to be as loud as possible.