Exhaust Loudness.......any Ideas?

[WOG BOY]

Getting a 3" Split Dump, Hi Flow Cat and 3" Catback with 4" or 5" Output/Muffler.....its stainless steel aswell if that has any effect....

Will this system be overly loud or does it depend on who makes the system?

I cant see how one from Kakimoto or HKS or X Force or whatever can be any louder when they are the exact same size etc.....

So can anyone let me know or answer my question/query and thought....

Cheers

Matt

Edited March 4, 2008 by WOG BOY

[34GeeTeeTee]

Getting a 3" Split Dump, Hi Flow Cat and 3" Catback with 4" or 5" Output/Muffler.....

Will this system be overly loud or does it depend on who makes the system?

I cant see how one from Kakimoto or HKS or X Force or whatever can be any louder when they are the exact same size etc.....

So can anyone let me know or answer my question/query and thought....

Cheers

Matt

I have a full 3" system on my 34 and it is legal db.... Its really quiet

[**RB2530**]

In reality that question cannot be answered because there are quite a few different muffler designs (internal design) out there...

I run a 3.5" to the cat. 3" inch cat, 3" resonator and 3" rear muffler with twin 2" outlets

plus a 2 1/4" screamer** pipe off external gate going into a 2 1/4" straight through centre chamber muffler which dumps under the car just behind gear box...

**I call it a 'moaner pipe'...

Its very legal db until waste gate opens and then would be just slightly over but sounds like a V12...

It really depends on what brand and design of muffler and resonator you use...

[TTT]

it's all in the muff.

get a centre muffler (not a resonator.. a muffler) between the cat and the rear muffler.

that will keep it quiet.

try not to use any cannon mufflers.

[Modena]

Yeah canon mufflers suck... they are droiny and annoying.

I am seeing alot of cars with twin canon muffler set up... less noisy.

[TTT]

^^ yeh but more rice

[Proximity Motorsport]

noise will depend on things like wall thickness of metal aswell as type of metal. Different mufflers have differnt internal designes which will either muffle more or less than others. Best to go with high quality mufflers as they usually flow better and muffle more

[R338OY]

I think the cat is important too. Something cheap and restrictive (like my current cat ) keeps it quiet. My mate has an X-Force turbo back exhaust and in the passenger seat (above the cat) it sounds like an aeroplane.

My guess is the cat really affects the tone because it's the first restriction from the turbo.

Look into a quality (metal) cat is my 2c

[kuma j]

http://www.5zigen.com.au/aspec%20muffler.htm

i got one of these from 5Zigen 3'' system which is within the legal limit.

it gives it a nice crisp sound.

[WOG BOY]

cheers guys....im gonna get it installed first....see how loud it is first then if i need to quiet it down ill put in a muffler part as GTST suggested!

[EMZ R33]

My R33 N/A 4 door series one sounds great.

Great general driving sound, no drone, and when the foot hits the floor its sounds crisp and strong.....lovin it!!

Ohhhh setup was conpleted at AAA Exhaust in Adelaide

2 1/4 inch from cat back to a 6" cannon muffler

http://s21.photobucket.com/albums/b258/EMZ...nt=IMG_2523.jpg

http://s21.photobucket.com/albums/b258/EMZ...nt=IMG_2533.jpg

http://s21.photobucket.com/albums/b258/EMZ...nt=IMG_2524.jpg

EMZ

[Modena]

Quiet often a stock exhaust sounds way better than the drony piece of shit tin cans that some bolt on.

I laugh every time I see some NA lancer or Mirage or Corolla or even a NA skyline/supra with a shitty canon up its arse.. they sound so loud and crap its embarassing and annoying.

Edited March 4, 2008 by Modena

[Marco-R34GTT]

Yeah canon mufflers suck... they are droiny and annoying.

I am seeing alot of cars with twin canon muffler set up... less noisy.

Any pics mate?

I've been looking like mad for a twin pipe system...

As far as I can tell, no one makes such a system for Skylines...

Even just a twin muffler trick, I've not found a thing...

[Modena]

Any pics mate?

I've been looking like mad for a twin pipe system...

As far as I can tell, no one makes such a system for Skylines...

Even just a twin muffler trick, I've not found a thing...

But they are for 200sx. I havent seen one for Skylines either unles its a custom job... been to Newcastle recently and saw many Skylines there with this set up.

[TezGT-R]

Blitzn has a twin system from the cat back on his 33GTST, but I have no pics and he's to lazy to post them up. Its rediculously loud. Sounds awesome but probably not legal

[R3Three]

Get a decent Japanese exhaust, trubo back zorst.

[bombtrack]

If by chance you are buying an HKS system such as Silent Hi Power it should be fine. I can't recommend it high enough. I have it on my R34GTT and it is quiet at idle and has a beautiful note and volume under decent load.

Sorry, have no idea about twin systems for Skyrines.

Cheers.

[R3Three]

Yeah HKS are quality brand.