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How to build a quiet exhaust?

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Old Aug 6, 2004 | 11:57 AM
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Default How to build a quiet exhaust for the R ??

As much as I like the looks and sound of the Greddy EVO2, I've decided its way too loud for my taste. So, the EVO2 goes out .. I am thinking of a 2.5" custom b-pipe with one or maybe even two resonators to keep the notes down and a T1R axle back (if I can find one !!).. Would this make for a quiet, yet high-performance exhaust for the R ?? I know the T1R can is really not very quiet but I'm hoping the resonated b-pipe will compensate for the T1R.. How much would the resonators hurt the performance level of the b-pipe ??

What other b-pipe, axle-back combinations are good that keep the decibels down ??

BTW, the EVO2 is about 3 months old and going to be sold for around $375 plus shipping if anyone is interested

Here's the info on the Greddy..
https://honda-tech.com/zerothread?id=950826
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Old Aug 6, 2004 | 12:01 PM
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a simple 2.5in b pipe with 2 small resonators, and a muffler should do the trick just fine.
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Old Aug 6, 2004 | 12:04 PM
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Default Re: (RTW DC2)

Hmmm....but if he thinks a greddy evo2 is loud, then I think nothing short of mugen or hytech will be able to meet your standards. To me it ain't loud unless I need earplugs.
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Old Aug 6, 2004 | 12:11 PM
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I've seen how drastically a pair of resonators can bring down the decibels on a friend's STi with 3" exhaust so I'm thinking of going the same way .. As for the axle-back, I want something nice-looking that performs which is why I'm thinking the T1R ..

I thought of welding in the resonators on the EVO2 but I think that would be cannibalistic The EVO2 b-pipe is really too nice to cut
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Old Aug 6, 2004 | 12:15 PM
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Default Re: (iperez)

Why would you want to "build" a quiet exhaust for an ITR ... unless you don't have the stock one ony more?
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Old Aug 6, 2004 | 12:21 PM
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I have the complete OEM exhaust system but what it comes down to is I want the high-performance of a 2.5" system while keeping the noise down to a minimum ..
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Old Aug 6, 2004 | 12:21 PM
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stock muffler
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Old Aug 6, 2004 | 12:25 PM
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Default Re: How to build a quiet exhaust for the R ?? (iperez)

just get 1 hytech twinloop can. 1 b-pipe with two inline resonators, and 1 renault cat. 2.5" ID on all of the above and it's quiet as stock.
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Old Aug 6, 2004 | 12:28 PM
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Default Re: How to build a quiet exhaust for the R ?? (Black R)

Almost as quiet as stock. I know.....I have driven behind Austin.
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Old Aug 6, 2004 | 02:33 PM
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Default Re: How to build a quiet exhaust for the R ?? (jdmspoonitr)

who sell hytech stuff?
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Old Aug 6, 2004 | 02:37 PM
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Default Re: How to build a quiet exhaust for the R ?? (.D2)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by .D2 &raquo;</TD></TR><TR><TD CLASS="quote">who sell hytech stuff?</TD></TR></TABLE>

http://www.hytechexhaust.com/
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Old Aug 6, 2004 | 04:54 PM
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Default Re: (iperez)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by iperez &raquo;</TD></TR><TR><TD CLASS="quote">I have the complete OEM exhaust system but what it comes down to is I want the high-performance of a 2.5" system while keeping the noise down to a minimum .. </TD></TR></TABLE>

try looking at the magnaflow exhausts... i personally bought one for my itr motor.. model 14850 in the race series..

http://magnaflow.com/02product...s.htm

its the fourth exhaust.. it sounds nice and deep.. the onli thing is that the inlet is 2.25. u need to cut it and weld the custom 2.5 exhaust piping to it. the inside part of the exhaust is alreadi 2.5 so its perfect. 4" outlet.
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Old Aug 6, 2004 | 11:00 PM
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Default Re: (RTW DC2)

yep
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Old Aug 7, 2004 | 08:15 AM
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Default Re: How to build a quiet exhaust for the R ?? (iperez)

Compaired to the 3" catless turboback I had on my WRX, no exhaust is loud to me anymore, but if the EVO exhaust was loud for you I don't know what to tell you. I have a Mugen twinloop on my R and am really happy with it (not a single look from a cop as I drive past). Just my opinion, but if you're planning on welding 2 resonators in addition to a quieter muffler, I'm not sure how much "performance" you will really be getting from a 2.5 inch exhaust compaired to stock. I think I would weld the stock muffler on to a 2.5" b-pipe and see how you like that before I went through the hastle and expense of paying a muffler shop to essentially make a custom dual resonated cat-back. Just my .02...
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Old Aug 7, 2004 | 12:19 PM
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Default Re: How to build a quiet exhaust for the R ?? (SLCTyper)

How about a turbo? My turbo with no cat and Tanabe Racing Medallion (yeah, with a silencer in place) is QUIETER than stock!


:D

-Chris


EDIT, OK stupid joking aside, I would go cost-effective and weld a half-decent muffler onto your existing pipes. You won't notice the 2 hp loss.
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Old Aug 7, 2004 | 12:50 PM
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Default Re: How to build a quiet exhaust for the R ?? (iperez)

keep in mind, the greddy system was designed together thus it sounds good

sound may change if you start mixing and matching

btw...do you have a header and a cat?

if all else fails return to stock...
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Old Aug 9, 2004 | 05:14 AM
  #17  
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Yes I have a 4-1 JDM with a 2.5" test pipe so the EVO just gets louder .. Yesterday I pulled the EVO axle back and installed the OEM muffler with the EVO b-pipe .. the car is obviously sounding just like OEM but when I floor it, the muffler rattles a bit which makes me think it won't last too long .. I am trying to get a hold of a friend with a Mugen TL to try that setup ..

I've heard people say the TL is not the best flowing system but if its quiet it will have to do for me I wonder how much power is lost with a TL over an EVO ??
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