In an ICE car the part of the tailpipe which is wider (which I believe is also were the catalytic converter is) is tuned to change the engine noise (mostly to reduce it, but it can also be tuned to make it “purr” rather than “roar”, like in sports cars)
Cut that out and the car becomes much louder (and if it’s not diesel, I believe it’s with the kind engine sound one associates with muscle cars).
The catalytic converter is up front near the engine, but usually when people want to make noisy, they just cut off or empty out the back boxes. Previous owner of my car did it, actually makes the exhaust of my 3.0 TDi sound kinda sporty, not like a diesel. But it IS a bit loud, I try to keep it under 1500 RPM or ideally even 1200 RPM if driving home at nighttime because at low speeds the exhaust actually makes more noise than the tires. At highway speeds you’re back to the tires being the noisiest part of the car unless you floor it.
In an ICE car the part of the tailpipe which is wider (which I believe is also were the catalytic converter is) is tuned to change the engine noise (mostly to reduce it, but it can also be tuned to make it “purr” rather than “roar”, like in sports cars)
Cut that out and the car becomes much louder (and if it’s not diesel, I believe it’s with the kind engine sound one associates with muscle cars).
The catalytic converter is up front near the engine, but usually when people want to make noisy, they just cut off or empty out the back boxes. Previous owner of my car did it, actually makes the exhaust of my 3.0 TDi sound kinda sporty, not like a diesel. But it IS a bit loud, I try to keep it under 1500 RPM or ideally even 1200 RPM if driving home at nighttime because at low speeds the exhaust actually makes more noise than the tires. At highway speeds you’re back to the tires being the noisiest part of the car unless you floor it.