What in Sam Hill are you
What in Sam Hill are you blathering about?
All over the place with some rant about nonsense.
Borla exhaust doesn’t muffle the high-tones which are the most damaging to hearing at elevated sound pressures.
Conversely, low-frequency noise travels further and through walls more efficiently. Hence an idling motorcycle being heard in your home.
I have an industrial generator that is 57-59 dB at full load, but you can FEEL the low vibration noise because that’s how the spectrum works.
Emissions testing and Exhaust sound pressure
have nothing to do with one another, unless the catalytic converters have been removed.
Drive-by noise testing is complex and requires specific, repeatable parameters. A cold night makes things seem louder, vs a hot summer day.
What most are presenting is called anecdotal evidence. It isn’t repeatable, it isn’t verified, or measurable. It only serves to make you mad about some thing.
I don’t like smelling legal weed smoke in my house either, but that’s their right. So, I keep my windows closed.