Soldato
This happens so rarely that it's a non-issue. You're suggesting punishing those that want to modify their cars (body kits, suspension, performance chips etc) because of something you witness maybe once a month if lucky.
I can count on 1 hand the amount of pops and bang cars I've heard over the last 2 months.
For you perhaps, try living on a 30mph A-road where the majority of cars aren't audible except those that make ridiculous pop and bang noises, even at low speeds. Add to the fact these knuckle dragging idiots also have nothing better to do than cruise around back and forth until the early hours of the morning when people are trying to sleep then you start to see how anti-social it is.
It's just ridiculous considering I can't hear a 70dB washing machine on full spin five meters away through three stud walls, but I can hear these cars from the same distance through an external wall with audio proof laminated triple glazed windows. There's just no need for it.
Modern day 500bhp+ saloons such as an M3 aren't that noisy when driving at 30mph. Yet a 1.2 re-mapped Fiesta with custom exhaust can come past and it sounds like gun fire at the Somme.