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Varex Vs Ecv Vs Quieter Exhaust

ricknismo
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Birds Grand Master

Birds

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Well closed is quieter than factory, so I imagine 86/87db thereabouts. I didn't get it tested on closed so I can't give an exact figure. Open is 98db with the twin tip muffler and a single resonator. This is on an RB25DET. And it's really not THAT loud when it is open, it just sounds like your average flowing Skyline exhaust. Not offensively loud anyway. The EPA ratings are very conservative, in fact, I think stock GTRs actually fail the test from factory...

Seriously so many cars on the road would fail EPA tests, both emissions and noise...but if they started picking on members of the general public and not minorities like car enthusiasts then they might have a situation on their hands :P

Nee-san Grand Master

Nee-san

Posted
Posted
Well closed is quieter than factory, so I imagine 86/87db thereabouts. I didn't get it tested on closed so I can't give an exact figure. Open is 98db with the twin tip muffler and a single resonator. This is on an RB25DET. And it's really not THAT loud when it is open, it just sounds like your average flowing Skyline exhaust. Not offensively loud anyway. The EPA ratings are very conservative, in fact, I think stock GTRs actually fail the test from factory...

Seriously so many cars on the road would fail EPA tests, both emissions and noise...but if they started picking on members of the general public and not minorities like car enthusiasts then they might have a situation on their hands :P

Yeah the stock ones tend to fail which is generally bullshit, it's really a bit of a joke the whole system, I've been meaning to find a way to shut mine up when I get pulled over as i think i tested it at about 105 at idle..... this is a 4" off a 26 but if I can get it quieter then factory then its a massive win win :D

  • 3 weeks later...
Parag0n Mentor

Parag0n

Posted
Posted
Yeah the stock ones tend to fail which is generally bullshit, it's really a bit of a joke the whole system, I've been meaning to find a way to shut mine up when I get pulled over as i think i tested it at about 105 at idle..... this is a 4" off a 26 but if I can get it quieter then factory then its a massive win win :P

I'm going down the Varex route, have seen cars go from 86db with it shut to 98db open, it's a quality stainless muffler as well, not chinese crap. It will do the job for you and the police really are none the wiser.

mad082 Grand Master

mad082

Posted
Posted

i was just looking at the ECV and how you are supposed to fit it. it says to fit it after the cat, however fitting it directly after the centre muffler will give better results as it will be forcing more air into the baffle of the muffler (like the pipes you can stick into cannons to make the exhaust quieter). you could then drill some holes in it to allow a bit better airflow through it when closed and still have decent noise attenuation.

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