most Quiet exhaust

[l3thal]

Hey guys, would like to get the lowest noise exhaust, sr20det

which would be the best an Apexi Noir, 2.5in BRM with high flow cat & 18" res, RSR ex mag with a high flow cat, anything else or just go custom?

what do you guys think is the lowest Db exhaust :tweak:

[JM216S14]

But you wont be able to hoon with a quiet exhaust?? You need a super loud one that sounds like a tractor....

anyways, I always read HKS sport exhaust. There is a few videos showing it idle and what not seems pretty timid.

[ThePaddy]

I fitted a twin exit exhaust with a magniflow resonator.

Looks stock flows great.

Go to a local exhaust shop they can make it up in 3" or 3.5

[koukimonst3r]

+1 on HKS sport exhaust

[RB25GUY]

Apexi WS2 is very quiet and has a nice sound when on throttle!

[jedi03]

been around the hks quietest compared to the rest!

[Nissan2nr22]

If you really want to get your exhaust quiet get any exhaust and go to a muffler shop and have them add long resonators.

Ex. my JZX100 straight pipe was very loud, went to my muffler shop, he charged me $60 out the door to add a 18" resonator and the sound went down by 30%

Or you can add another straight through muffler and lower the sound even more. It still sounded good when I revved it.

[nate1]

i have the Apexi Noir and love it

[jared420sx]

The one with the most mufflers and smallest piping.

[Kingtal0n]

stock exhaust supports 260rwhp

no need to upgrade until you pass that

[battery1882]

cheaper route is ISR megaphone, or anything that has a proper muffler.

[krron]

I agree I have a HKS sport on my 14 with the rb25 and it is so quiet. Don't even have to worry about cops its great.

[Loufig]

HKS sport +1

[Feast Japan]

Ive run the Nismo on my old S15, very quiet and flowed very well. Second to that I also ran Silent hi-power HKS system on the S14. But with the HKS I had to make some changes to the acceleration map as it was robbing a bit of HP.

[dorkidori_s13]

+1 on HKS sport exhaust

this... ive had one on my S13 with SR for almost 4 years now. wouldnt trade it for the world!!!

[grudge]

+1 for Apexi noir

[Frank_Jaeger]

stock exhaust supports 260rwhp

no need to upgrade until you pass that
I'm assuming you mean it bottlenecks after that point for peak power. But that's not the whole story. I noticed a huge improvement in turbo spool by going to a larger exhaust.

[TheRealSy90]

umm, stock? yeah stock.

[Jorgs_7]

Blitz Realize TT


So quiet that I sold it for a ebay 3" set up.

Exhaust manifold makes a big difference with SR sounds too

[NiSilS14]

Apexi noir here. The bigger the piping the louder the exhaust will be. muffler designs will also affect sound.

[Kingtal0n]

I'm assuming you mean it bottlenecks after that point for peak power. But that's not the whole story. I noticed a huge improvement in turbo spool by going to a larger exhaust.

I've done a fair amount of testing using a cut-out on the stock exhaust. There is something to be gained by reducing exhaust restriction, up to a point, when using a small t-25 style turbocharger. The optimal point was with the cut-out only partially open, around 20% of a 2.5" cutout.

A sweet blend of good exhaust velocity and overall flow capability is necessary.

[di-devol]

I've done a fair amount of testing using a cut-out on the stock exhaust. There is something to be gained by reducing exhaust restriction, up to a point, when using a small t-25 style turbocharger. The optimal point was with the cut-out only partially open, around 20% of a 2.5" cutout.

A sweet blend of good exhaust velocity and overall flow capability is necessary.

So just like your posts, more hot air?