Any Way To Quieten My Exhaust>

[Modena]

I have a Just Jap turbo back zorst on my R33 GTST, anyway I want to make it more quiet, is this a simple procedure or will I need a new exhaust altogether or at least a new tail pipe?

I heard a resonator might help.

Thanks

[R31Nismoid]

Single or dual muffler?

Is single - add another muffler.

If dual, add better ones

[Aif]

add a resinator into ur zorst.

Aif

[R31Nismoid]

Unfortunately a resonator does not always work.

There was a thread a couple of weeks ago on this same thing and many people had issues with a resi doing nothing

[Modena]

Single or dual muffler?

Is single - add another muffler.

If dual, add better ones

This is the copy of my exhaust:

[Modena]

add a resinator into ur zorst.

Aif

Where can I buy one and how do I install it?

[Ronin 09]

you have a resonnator in the exhaust already - it's that hot dog shaped thing in the centre bit of pipe.

get a proper 3" muffler (like the one below), cut the resonnator out and put the 3" muffler in.

done.

taken from Unique Auto Sports:

[Modena]

you have a resonnator in the exhaust already - it's that hot dog shaped thing in the centre bit of pipe.

get a proper 3" muffler (like the one below), cut the resonnator out and put the 3" muffler in.

done.

taken from Unique Auto Sports:

Sounds like a big job... needs welding?

I also have my back seat taken out (coupe) would this perhaps made the noise levels sudenly increase from the exhaust?

[R31Nismoid]

You have one muffler - that's the problem.

You need another muffler like Ronin posted, and yes... it will certainly need welding in with flanges etc.

[benl1981]

Wont need flanges. Just chop and weld.

[abu]

Apexi ECV

You won't lose any flow, and its claimed by APEXi that it can reduce noise levels down to 10dB.

$100 - $200 second hand/brand new depending where you get it.

Works very well and easy to install.

This is only good though if you want it quiet occasionally, if you want it quiet all the time get the muffler.

Edited November 7, 2007 by abu

[Dose Pipe Sutututu]

I agree on removing the hotdog and replacing it with a good quality mid muffler, will reduce noise greatly.

[R31Nismoid]

And if the muffler fails... You'll wish you spend the couple of $$$ on flanges.

[STATUS]

Apexi ECV

You won't lose any flow, and its claimed by APEXi that it can reduce noise levels down to 10dB.

$100 - $200 second hand/brand new depending where you get it.

Works very well and easy to install.

This is only good though if you want it quiet occasionally, if you want it quiet all the time get the muffler.

haha yeah used them for years but remmeber it only has no restriction when not being used once you knock the noise level down you also kill your power.... alot. they become very restrictive.

[abu]

haha yeah used them for years but remmeber it only has no restriction when not being used once you knock the noise level down you also kill your power.... alot. they become very restrictive.

Hahah yep.

They are heaps restrictive, but good for avoiding unwanted attention (cops) and keepng the noise level down for your neigbours lol

I got the non flange type that you weld into the exhaust, so it becomes 1 piece, rather than having an additional flange join.

Good thing is you can just drop the lever and your back in action, back to the same power

[MBS206]

And if the muffler fails... You'll wish you spend the couple of $$$ on flanges.

Don't use the flanges. Use the joiners they run on truck exhausts.

When you need to change exhausts, it takes 30 seconds, and there is NO gasket/goo involved!

Want to replace the muffler with a straight piece... It's going to take you longer to jack the car up this way!

[Ronin 09]

haha yeah used them for years but remmeber it only has no restriction when not being used once you knock the noise level down you also kill your power.... alot. they become very restrictive.

agreed - why not have a quiet exhaust that flows as well as a loud one, so you can boot it everywhere without looking like a dickhead?

i know i have one, as does Nismoid which will easily flow 350+rwkw and is quiet as a mouse (well nearly)

[R31Nismoid]

350rwkw+ in flow

3.5"

and... 94dB

Gotta love that

[Dose Pipe Sutututu]

I could say mines just as quiet.. got 3.5 inch as well from ST MAY, massive mid muffler and rear muffler... makes the car sound like its stock

[BAMR33]

try eBay, 3" straight through resonators and mufflers on there ya'll. Exhaustqueen has a decent range.