I want to change my exhaust again (have 2.5" crush-bent w/ cat, resonator, and thermal muffler) but it's way too loud. Anyone knows of any good turbo exhaust which is also very quiet?

 

Keep in mind that your current exhaust will get much more quiet once you get the turbo on.

my dynomax super turbo (~$50 at advance auto parts) 2.25" is reasonable on my NA car with the high flow cat and 2.25" cat-back. I imagine the 2.5" version would sounds good without being too loud on a turbo car.

 

i hope so. right now it gets extremely raspy past 4k rpm and its WAY too loud even at idle. i still have jrsc in it right now.

 

you cant even hear my exhaust over the turbo

 

haha! this is exactly what im trying to avoid. california police is very strict and i really dont want to see my car being crashed along with some shitty hondas :/

im going for a sleeper look

 

must suck for you guys...i dont know what i would do if i saw my car being crushed, and its not even turbo yet...i think id cry...seriously
as far as your question, ill ask a friend of mine, his car looks stock but is pushing almost 300 rwhp on 15 psi...exhaust very quiet, looks stock too and ill let you know

 

you're trying to advoid an exhaust that sounds equal to stock? cause that's what I'm saying mine sounds like.

 

whaaamx5: please ask him what exhaust he is running
Braineack: im trying to avoid any sounds at all that would point out my "non-stockness" to cops. which exhaust are you running?

 

It will quiet down a LOT when the turbo goes on, believe me. I don't have a muffler on either car and neither is all that loud.

 

hopefully that freaking rasp will go away too! cant stand it. feels like im driving a honda civic or something :/
i even stopped driving my miata since i got that exhaust!

 

Until my Enthuza and other components go on mine, the Miata is just Greddy DP > stock cat > mufflerless stock piping. Before the turbo it was the same, and it was LOUD AS **** and very raspy. Now that the turbo is on it is very quiet.

 

ive got 2.5"dp, 3" cat, 3" catback w/ dynomax race muffler/resonator and a summit turbo muffler. Its sorta loud, bout like any aftermarket catback sounds.

 

I don't think my Enthuza 3" is very loud at all. It definitely sounds a little different from stock, but it's not all that different. The turbo will quiet the car down a lot.

 

try HKS

 

hks is nice but way too expensive. im on a budget

 

To answer the title of this thread:

The OEM exhaust.

 

yeah, but its not really suitable for turbo, is it?

 

a 2.5" with cat, resonator and muffler will not be loud.

http://youtube.com/watch?v=R_IU4OnItxA

This is with a 2.25" borla catback with an exhaust leak between the DP & Cat.

The additional turbo noise wont have cops looking if you arent boosting around like a dickwad.

 

My car is quieter than any miata with an aftermarket exhaust.

I have a Maremont metal cat, a 2.5" Dynomax resonator, and the largest 2.5" straight-through Magnaflow muffler that would fit. I think it's 4x8x22":

pics:
http://forum.miata.net/vb/showpost.p...9&postcount=15

 

wow... i might just give it a try later! i want it to be as quiet as my rsx type s. i dont really like loud exhausts