guys, i was just wondering how loud your turbod hondas are, here in NZ they are cracking down hard on the loudness of a car, and i need some advice as to what i can do to make my car quieter without restricting the flow too much...

Thanks in advance....

 

I have a 3" piping exhaust setup w/ Dynomax (round) muffler and CATCO racing catalytic converter and its pretty quiet...It still has a nice tone sound, but not too loud nor annoying. Plus, my setup cost me bout...hmmm...under $450 installed at a local muffler shop (A-1 Muffler Shop of Belmont/Mt.Holly, NC). ***[all components have 3" inlet/outlet]

 

3" downpipe, no cat, all the way back to an apexi N1. Not very loud at all, you can carry on a conversation in the car or listen to the radio no problems. I am probably going to go to a thermal 3" muffler just because the big N1 cannister gets too much attention.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by NVturbo &raquo;</TD></TR><TR><TD CLASS="quote">I have a 3" piping exhaust setup w/ Dynomax (round) muffler and CATCO racing catalytic converter and its pretty quiet...It still has a nice tone sound, but not too loud nor annoying. Plus, my setup cost me bout...hmmm...under $450 installed at a local muffler shop (A-1 Muffler Shop of Belmont/Mt.Holly, NC). ***[all components have 3" inlet/outlet]</TD></TR></TABLE>

what is the back pressure on this puppy?? is there a nice flow through???
THanks dude.

 

There is minimum bends on my setup and the back pressure is just nearly perfect. Less noise, all the power....no doubt!!!

 

add resonator

or get a ecutout with stock exhuast

or buy my rsr muffler

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by u2civic1 &raquo;</TD></TR><TR><TD CLASS="quote">add resonator

or get a ecutout with stock exhuast

or buy my rsr muffler</TD></TR></TABLE>


resonator, i already have one, might try aonther.... will also change the muffler, rsr you rekon are quite quiet???
thanks dude

 

2.25" mandrel bent
"cherry bomb" muffler as a resonator
Normal muffler at the end

It sounded pretty decent, not too loud. I installed my turbo and now it sounds almost stock.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Chip &raquo;</TD></TR><TR><TD CLASS="quote">3" downpipe, no cat, all the way back to an apexi N1. Not very loud at all, you can carry on a conversation in the car or listen to the radio no problems. I am probably going to go to a thermal 3" muffler just because the big N1 cannister gets too much attention.</TD></TR></TABLE>

i have pretty much the same setup but a 2.5" downpipe.. i will be replacing the N1 canister soon because A. it hangs to low, B. gets unneeded attention from people.. i really like the way the N1 sounds and looks on my car.. it got a lot quieter in the low rpms when i installed the turbo but it is still loud when i get on it up in the high rpms..

 

you could also run your dumptube back into the exhaust....which would make it quieter. Cyphears car, you hear the wastegate more than the exhaust.

 

I just posted this in the ITR section

https://honda-tech.com/zerothread?id=912462

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tegmech &raquo;</TD></TR><TR><TD CLASS="quote">you could also run your dumptube back into the exhaust....which would make it quieter. Cyphears car, you hear the wastegate more than the exhaust.</TD></TR></TABLE>

true, but wastegate makes noise only when it opens ya?
my setup is loud all the way through from low revs, boost kicks in 35krpm...
THanks guys for your input.. much appreciated