Honda Civic / Del Sol (1992 - 2000) EG/EH/EJ/EK/EM1 Discussion

Quieting Exhaust

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Old Feb 6, 2013 | 05:09 AM
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Omega Blaze's Avatar
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Default Quieting Exhaust

I currently have a 4-2-1 Header, Test Pipe, 2.25 Catback w/Ebay Resonator, and Apexi Ws2 Straight Through Muffler.

I plan on keeping the 2.25 catback and just run a stock eg muffler with an e-cutout. Would it sound close to stock?

Hoping for this sound.
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Old Feb 6, 2013 | 06:30 AM
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Default Re: Quieting Exhaust

I would personally start with adding the cat back in. Without the cat, many 4 cylinders tend to sound more "tinny". What length of resonator do you have installed on the car? A longer resonator will help, but it may not be necessary if running a cat along with your planned change to the EG muffler.

My newly purchased EM1 had the rear muffler removed and replaced with a DC Sports tip. It would drone at highway speeds causing headaches. I installed the full WS2 kit this weekend, and the exhaust is quieter than the wind noise at highway speeds.

Josh
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Old Feb 6, 2013 | 07:11 AM
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Default Re: Quieting Exhaust

Originally Posted by Foster12
I would personally start with adding the cat back in. Without the cat, many 4 cylinders tend to sound more "tinny". What length of resonator do you have installed on the car? A longer resonator will help, but it may not be necessary if running a cat along with your planned change to the EG muffler.

My newly purchased EM1 had the rear muffler removed and replaced with a DC Sports tip. It would drone at highway speeds causing headaches. I installed the full WS2 kit this weekend, and the exhaust is quieter than the wind noise at highway speeds.

Josh
So the cat will quiet things down better than the the muffler?
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Old Feb 6, 2013 | 09:37 AM
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Default Re: Quieting Exhaust

No, a cat will do very little for the sound. I tried only to cut it out and replace with a 24" Dynomax bullet resonator. A resonator will make the biggest difference.

The stock muffler is a bad idea because it will restrict all the flow that the 2.25" piping provided. Basically it will be bottlenecked onto the muffler taking away any performance gains. I have a yonkaka WS-II rep exhaust that I picked up for under 300. With the added resonator, I can't hear the exhaust at idle and it has great sound when I get into the throttle. I will be adding a e-cut out myself once I boost my GSR motor.
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Old Feb 6, 2013 | 10:35 AM
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Default Re: Quieting Exhaust

Is there any performance upgrades other than I/H/E? Is the motor stock?
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Old Feb 6, 2013 | 10:42 AM
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Default Re: Quieting Exhaust

Originally Posted by speedjunkie_g35
No, a cat will do very little for the sound. I tried only to cut it out and replace with a 24" Dynomax bullet resonator. A resonator will make the biggest difference.

The stock muffler is a bad idea because it will restrict all the flow that the 2.25" piping provided. Basically it will be bottlenecked onto the muffler taking away any performance gains. I have a yonkaka WS-II rep exhaust that I picked up for under 300. With the added resonator, I can't hear the exhaust at idle and it has great sound when I get into the throttle. I will be adding a e-cut out myself once I boost my GSR motor.
I don't care about restriction. That's the entire purpose of the e-cutout. Performance would be just a switch away.

Which would affect sound the most: Resonator or a stock 1.75" eg/ej muffler?
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Old Feb 6, 2013 | 10:42 AM
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Default Re: Quieting Exhaust

Originally Posted by CO671
Is there any performance upgrades other than I/H/E? Is the motor stock?
...

Last edited by Omega Blaze; Feb 8, 2013 at 04:42 AM.
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Old Feb 6, 2013 | 11:43 PM
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Default Re: Quieting Exhaust

bumpppp
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Old Feb 7, 2013 | 05:08 AM
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I have stock exhaust (4-2-1 stock header/manifold), stock cat, aftermarket resonator (stock one was rusted out) that's 26" long and 2 1/4". Now someone stole my stock muffler about two months ago so i have been driving around with no muffler. It sounds good. Had a few friends tell me that it sounded good, not like a ricer. So a resonator is defiantly one way to go. But a muffler with enough baffles is going to be quiet. Remember though cut noise is built back pressure.


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