Nothing really new. Cherry Bombs and such have been used to enhance exhaust noise for a great many years.
Enhancing existing engine roar with pipes is one thing, running fake sounds through the speakers is gay.
I went to high school with a guy who could make his truck backfire anytime he wanted. He used to make a lot of crowds duck.
I had lots of fun with straight pipes in the 70s.
Although not a speedster some of the best fun was a Datsun 510 wagon. I could turn the ignition off with the engine in gear, fill the exhaust system with fumes, and restart with a boom and a mighty fine flare.
Speakers worth more than whole car but that’s another story. Underdash cassette decks ROCKED!!
Sparkplugs in the exhaust goes way back to the 50s.lol
Not really the same. This is about adding resonators, etc, to change the actual exhaust note as heard inside the car, as well as actually piping fake engine sounds through the car stereo. When you put a Cherry Bomb in a car you heard the same sound as everyone else around you (and boy did they hear it).
**Cherry Bombs and such***
is that the same as “dumps”?
But using the car’s stereo system to simulate the sound is new.