Yanking out the intake resonator makes a nice improvement - Honda Accord Forum : V6 Performance Accord Forums
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Old September 27th, 2011, 09:57 PM   #1
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Yanking out the intake resonator makes a nice improvement

Do I really need an intake? Or just toss in a K&N panel filter and duct the air from the opening in the bumper to the airbox? Kind of like that the intake noise increase wasn't too much, just enough to give it a nice growl. Most of the gain seems to be from 5000 to redline.

BTW, getting the box out was a real pain, had to cut the tube going into the top of it to get it out. Left the intake tube under the battery in place, couldn't get it out, didn't feel like pulling the battery box to get enough clearance.
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Old September 27th, 2011, 10:33 PM   #2
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I did almost what you're talking about. I was able to get the airbox out through the fender well with a little twisting, turning, and pulling. I agree it sounds a little better though I'm skeptical about how much of a gain if any it provided. Here's the thread where I got the idea and it includes a picture of my result:

Cold Air Intake Question - Drive Accord Honda Forums
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Old September 28th, 2011, 07:28 PM   #3
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I've also switched to premium fuel (93 octane here) so probably a combination of both. But there definitely is a difference, similar to the GAB (gutted air box) mod so popular on 2000-2003 Maximas. One dyno run showed a 9 hp gain, about what a short ram gives on the VQ35.

The resonator is pretty big and the air has to take a convoluted route to get from where it is drawn from, then down, into the resonator (which is baffled internally), then back up and into the air box. Right now, I have the tube that went from the air box into the resonator still attached to the air box so air is being drawn in through the fender and not the engine compartment.
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Old September 28th, 2011, 09:06 PM   #4
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welcome to the forum Scottwax. I see you have a new hobby instead of just detailing haha. I'm also on a lot of the detailing forums your on.
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Old September 28th, 2011, 11:09 PM   #5
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Working on cars is an old hobby for me, started with the Chevelle I bought in high school.
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Old September 29th, 2011, 05:23 PM   #6
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I put in a drop in K&N in my 05 V6spd, and it helped make the roar of the motor come out. I don't know about any horsepower gains though...
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Old September 29th, 2011, 10:46 PM   #7
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I figure if you tear out the resonator and drop in a KN filter, it would work the same. Only thing is the restriction between the filter and throttle body
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Old September 30th, 2011, 12:28 AM   #8
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I took out the resonator after I had already installed the K/N Short Ram because there's no point in having it in there. Its a useless chunk of plastic.
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Old September 30th, 2011, 12:44 AM   #9
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Jconnway I think he is thinking of keeping his OEM intake, just ripping out the resonator
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Old September 30th, 2011, 05:10 PM   #10
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Jconnway I think he is thinking of keeping his OEM intake, just ripping out the resonator
That's exactly what I did, shorter path for air into the engine and a bit more intake growl. Same with my '02 Maximas, but that was mostly out of necessity. No one makes a true cold air intake for them anymore. Just drill 1" holes in the top of the filter holder and get free horsepower, about the same as a short ram gets.
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Old October 3rd, 2011, 10:11 AM   #11
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Getting an actual CAI, or even a short ram, is definitely more efficient than simply removing the resonator.

For $ saving though, you cant go wrong.
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Old October 7th, 2011, 02:38 PM   #12
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I was able to get mine out by opening the splash guard panels around the left wheel, with that wheel taken off that is. I didn't remove the battery either.
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Old December 7th, 2011, 09:18 PM   #13
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Made a short roll-on acceleration video to show how the car sound with the resonator removed. Probably not as loud as a CAI or short ram but at least I can hear the engine now!

[ame=http://www.youtube.com/watch?v=qJxPnfMoBKY]2004 Honda Accord V6 acceleration - YouTube[/ame]
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Old December 7th, 2011, 09:27 PM   #14
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you used oem filter right? the K&n lets in too much dirt. You can actually see light passing through the media
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Old December 7th, 2011, 09:50 PM   #15
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Yes, still have the OEM filter.
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Old December 7th, 2011, 10:27 PM   #16
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worth it to remove IMO. its unnecessary weight, restriction on the engine... useless part
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Old December 7th, 2011, 10:49 PM   #17
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Yes, still have the OEM filter.
good choice.
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Old December 8th, 2011, 12:23 AM   #18
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I removed everything in the last pic on my car; the engine is noticeably louder, however, I cannot compare it anything since I've never owned a CAI/SRI. I believe Honda engineered a mild horn shape into the stock intake tube design...



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Old December 8th, 2011, 08:16 AM   #19
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For anyone that's curious, here's a link that shows what the inside of the resonator box looks like. #25 in the thread.

How I spent my day off - Page 2 - Drive Accord Honda Forums
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Old December 8th, 2011, 08:43 AM   #20
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^^thats pretty interesting, but if you do an intake, your not gonna hear any change in sound when you take out the resonator
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Old December 8th, 2011, 11:02 AM   #21
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For anyone that's curious, here's a link that shows what the inside of the resonator box looks like. #25 in the thread.

How I spent my day off - Page 2 - Drive Accord Honda Forums
Do you have to split the resonator apart to take off the upper tube? Is it locked in place by the two pieces of the resonator chamber?
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Old December 8th, 2011, 03:26 PM   #22
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^^thats pretty interesting, but if you do an intake, your not gonna hear any change in sound when you take out the resonator
Maybe but if you do a cold air intake the resonator needs to come out anyway to make room for the air filter and tubing.
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Old December 8th, 2011, 08:03 PM   #23
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true. i did a short ram
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Old July 13th, 2012, 01:11 AM   #24
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Intake resonators work on a simple principle and are for sound tuning only.

They work EXACTLY like blowing over the top of an empty bottle. The volume of the resonator is what influences the sound.

Blow over an empty 1 gallon bottle.
Blow over an empty 1 liter bottle.

Airflow doesn't change, only sound.

The horn shape at the top of the resonator works just like the horn on a trumpet. Not a huge influence on flow either...
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Old July 18th, 2012, 03:58 PM   #25
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The horn shape at the top of the resonator works just like the horn on a trumpet. Not a huge influence on flow either...
Not to mention any benefit you get from that is lost as the air makes its way through the resonator and through the airbox and filter.
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Old May 16th, 2018, 09:55 AM   #26
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Old thread, but I just bought a 2006 Accord Sedan v6 6 speed, and yanking the intake resonator was the 1st mod I did. Huge improvement for me, all around. I did it without taking the bumper off or the battery out, I just removed the shield in front of the drivers side tire. It was a pain in the butt for sure. Wow that intake resonator is ugly though. What a giant piece of wasted plastic that just restricts airflow and makes the intake pull hot air. My car now has 100% better throttle response now, I can actually hear the engine under throttle, and I've definitely gained some power.
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