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Hey, I've got a r33 na with an x-force cannon (4 1/2 inch) and want to get it quieter with less vibration that hurts your head after a while. I've installed the silencer and that's done alot but want to hear any ideas of fiberglass, cotton etc inside the cannon to get some quietness. Thanks

get a flange the size of your exhaust pipe, weld in a plate to take up half the space inside the circle, bolt it in between your rear muffler and exhaust - got me out of shit =] oh and if you loose power just grind some of the welded plate off till you find a happy medium..

Fit a Varex muffler? Don't bother with the flange plate, it won't help that much. Or fit a s/h stock turbo system?

Where are you located? I heard there is a big blitz on (Melbourne and Sydney) for noise at the moment.

If it is too loud outside the car, get a muffler put in it.

If it's too loud inside the car, get some thick carpet and line your boot with it.

Certainly takes the edge off.

4 1/2inch cannon on a na??? shit.. that must be absolute hell, your problem is the ID size and the type of muffler.

I have a fujitsubo muffler with a 2 1/2inch silencer, that muffler must be as quiet as stock and still looks sounds great...

if you were in brissy id sell it to you.. :yes:

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