Resonator placement in exhaust question: - Honda-Tech

Resonator placement in exhaust question:

LinkBack Thread Tools Search this Thread
Old 03-23-2003, 08:52 PM   #1
Junior Member
Thread Starter
Join Date: Feb 2001
Location: Gilbert, Az, Usa
Posts: 176
Default Resonator placement in exhaust question:

Hey guys, just got my b18a turbo crx running and I'm using a 3" exhaust (downpipe is 2.5 into 3 just after the first bend) that is custom built. Currently there's only 1 straighthrough muffler at the tailpipe end, and it's WAY too loud for my taste. If I add a resonator, it'll be near the end of the exhuast as well, about 6 inches ahead of the muffler. Usually the resonators seem to be about mid-point in the exhuast, so I'm wondering if having it that close to the end and that near the muffler will make any difference, or if it HAS to be in the midpoint for proper sound supression?

Thanks for any advice,

Ryan P.
SJP0tato is offline   Reply With Quote
Old 03-23-2003, 11:01 PM   #2
Junior Member
Nikolai's Avatar
Join Date: Jul 2002
Location: Austin, TX
Posts: 383
Default Re: Resonator placement in exhaust question: (SJP0tato)

I took an acoustical engineering class last semester here at UT, and from that, I can tell you the following:

LONGER mufflers and resonators create a lower resonance, and therefore will give your car a generally "quieter", more mellow and gentle sound.

By differing the muffler and resonator length, you are creating two frequency filters that operate at different frequencies, and each resonance will be cancelled by the other.

To answer your question, your resonator will do some good, but the further you can get it from your muffler, the better. Just remember, you already have a catalytic converter (I'm assuming, if not, get a hi-flow model, as this will make a HUGE difference in the sound quality/volume without drastically hurting performance.), so try and place the resonator between the cat and the muffler. This will yield the best results. Good luck, and feel free to PM me with more questions. I spent weeks researching things before I had my custom exhaust system made, and it is EXACTLY what I wanted!

Nikolai is offline   Reply With Quote
Old 03-23-2003, 11:26 PM   #3
Honda-Tech Member
X2BOARD's Avatar
Join Date: May 2001
Location: Trinidad, W.I.
Posts: 5,084
Default Re: Resonator placement in exhaust question: (Nikolai)

6" before the muffler will not work well, you will get a bit more sound supression, as a resonator is basically a straight thru muffler w/ less sound deadening material. But the resonator should be placed much further upstream to work effectively. Overall, the muffler determines your dB output... a crappier muffler = a loud muffler.

What cat are you using ? Stock or 3" ?

A 3" pipe, reduced to a stock cat will increase your noise level, your overall exhaust design (2.5" to 3" to cat to 3" to muffler) really would result in a relavtively loud exhaust. It might sound funny, but you may want to consider a 3" DP if you can get one.

X2BOARD is offline   Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
Feasibility study: Quiet 3" Exhaust Libertariat All Motor / Naturally Aspirated 54 03-20-2012 04:12 AM
need quiet muffler and exhaust type Gendy Honda CRX / EF Civic (1988 - 1991) 11 03-24-2009 08:36 PM
Resonator vs adding another inline muffler batboyvaj Forced Induction 67 02-29-2008 03:21 PM
FS: S2000 muffler and resonator kumar75150 For Sale 10 05-06-2002 05:45 PM
FS: Very free flowing exhuast evil vapor For Sale 5 08-21-2001 06:38 AM

3, cat, difference, exhaust, ideal, integra, length, muffler, placement, placment, placments, resonator, resonators, sound, system

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -8. The time now is 03:48 PM.

Honda and the Honda marquee are registered trademarks of the American Honda Motor Company, Inc. Neither American Honda Motor Company nor its subsidiaries or affiliates shall bear any responsibility for content, comments, or advertising. is not affiliated with American Honda Motor Company in any way. American Honda Motor Company does not sponsor, support, or endorse in any way. Copyright/trademark/sales mark infringements are not intended or implied.