Quote:
|
Originally Posted by S14DB
Mufflers work by sound pressure absobtion/dissapation. N1 cans are thin and can't absorb/manage alot of pressure. A larger can will absorb/manage alot more pressure. Also, the 80mm has 33% more surface area in the core to absorb more pressure, which makes the 80mm quieter than the 60mm. The reason people say the 80mm is louder is that the bigger can makes the tone lower than the 60mm and the ear perceives lower tones at the same dBL as louder than the higher tone.
|
loudness depends on lack of restriction.
muffler-sound suppressor. do is resonator.
2 types.
1) chamber (cherry glass pack, flowmaster etc) stock uses it, but to make one that actually is not as restictive is expensive. it restricts the gasses, slowing them down, thus making it quiter.
2) can type (n1 etc) its REFLECTION suppression, sound reflects thus getting delayed, thus being quiter but sound good (n1, my rsr, etc)
also u got resonators which is a REFLECTOR.
so its not only the size of piping its the availability of muffler and/or resonators. exhaust is about velocity on ka. you dont need backpressure, muffler does that job fully for you at 3 inches. anything bigger than 3 is too much