Why Are Na Skylines And Supras Louder Than There Turbo Versions ?

[Kujotk]

as the title says......

finding this curious and want to know why this happens....

[mitchy_]

the turbo itself muffles the exhaust, thus why most NA cars are louder than turbo with similar exhaust system, etc..

[R33_Dude]

^^ Pretty much.

As the turbo essentially chops up the air from the exhaust plus removes some heat it also reduces the sound. Its basically because it has removed some of the kinetic energy from the exhaust gas.

N/A's are louder because the gas is not as restricted and is hotter.

Or at least thats what I have been led to believe.

Edited June 23, 2009 by R33_Dude

[Johnny]

Basically what people have said so far; sound is actually kinetic energy, vibrations in the air transmitted to little bones in your ear which vibrate and your brain will interpret this as sound.

thick iron in 2 turbos will absorb some of that energy and to spin the turbine so there will be less avaliable for 'sound'; comes from the basic theory that energy is never lost, simply transformed into another form.

[Kujotk]

cool cool, thanks.... so it wasn't just my imagination

[Beer Baron]

good question and the right answer. on any given engine a turbo charged version will be quieter than NA version. so if you took the same engine, and same exhaust, but one was turbo and one was not the NA car would be much louder. it's purely because the turbocharger is causing a restriction in the exhaust and muffles the sound of the engine.

[GTR_RB26TTS]

Larger turbo's also (obviously) let more noise through.

Wether twins vs a similar single would be interesting

Edited June 23, 2009 by RB26_GTSS

[bozodos]

Which is also how you can have a 3" exhaust with 1 muffler and not be waking up people in the next suburb

[ONE-VIA]

Which is also how you can have a 3" exhaust with 1 muffler and not be waking up people in the next suburb

lol my neighbours hate me

na with a cat back ftw (for me )

its amazing how loud the car sounds from the outside when you let someone drive it around the block

[bozodos]

R33 N/A straight thru

[N1GTR]

R33 N/A straight thru

[bozodos]

RB25DET no exhaust (most similar sounding to mine i could find lol)

Edited June 24, 2009 by bozodos