Factory Air Inlet Resonators - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

davidj · 06-13-2009, 02:38 PM

I came across this info and thought it was interesting;

Air Inlet Resonators
What's up with all the goofy warts and tubes on the inlet duct for the Camaro SS V-8? These are known as Helmholtz resonators, and help the Camaro pass federal drive-by noise standards, and to reduce unwanted resonances in the induction. They have to be different sizes and shapes to target different frequencies at different levels of attenuation. For a given atmospheric pressure, the longer the resonator, the lower the affected frequency. To attenuate a frequency (reduce its loudness) the length will be a multiple of the affected wavelength. Also, the wider the aperture, the greater the attenuation at that frequency. These two photos show three different Helmholtz resonators which target three specific frequencies.

p.s. Just realized should have been in engine forum.

LDGn63 · 06-13-2009, 04:12 PM

I wondered what the heck but figured it had to do with sound in some way.
Thanks!

2SSRS@Gen5diy · 06-13-2009, 04:25 PM

Good post thanks for the info.

Gameover · 06-13-2009, 04:37 PM

Interesting!

yob2kanobe · 06-13-2009, 05:32 PM

one of the first things to go when I get mine. I want it loud!

AG454 · 06-13-2009, 05:38 PM

Anybody know what size this air inlet tube is? It looks like 4 inches, I want to bulid a custom CAI. Thanks.

JJ2010 · 06-13-2009, 06:22 PM

I looked at mine when I first got my car and said what is all this goofy mess....

My LMR CAI will be here soon and all that funky mess will be gone....

Supermans · 06-13-2009, 06:26 PM

Getting rid of it should be good for at least 1 HP gain ..lol.. 427HP here I come..

PAUL SS · 06-13-2009, 06:45 PM

That's a great argument for an aftermarket cold air intake.

fldrummer · 06-13-2009, 07:43 PM

Yeah, when I saw those on mine, I said "WTF?!" I knew they were for sound deadening, but that's just ridiculous. I said to myself this CAN'T be good for air flow to the engine. 'Definitely going to get an aftermarket intake or CAI, but want to wait and see what other systems come out.

Halo2 · 06-14-2009, 01:14 AM

Even the GM Performance air intake has one of these on it.

SicSix6 · 06-14-2009, 03:45 PM

Quote:

Originally Posted by Paul SS

That's a great argument for an aftermarket cold air intake.

If you mean against the CAI, Not really, have you ever wondered why the car suddenly reacts to stuff like aftermarket exhaust, CAI, etcetera? Much of the reason many people mod their cars is to do away with the restrictive government regulated items and baffles, so their car will actually go faster and respond to straight into the intake or straight out of the exhaust performance.

With aftermarket CAI's you actally benefit, with better miles per gallon and performance.

Quote:

Originally Posted by Halo2

Even the GM Performance air intake has one of these on it.

The part I highlighted above is the answer to why that is.

deweyg63 · 05-26-2016, 07:55 AM

Quote:

Originally Posted by SicSix6

If you mean against the CAI, Not really, have you ever wondered why the car suddenly reacts to stuff like aftermarket exhaust, CAI, etcetera? Much of the reason many people mod their cars is to do away with the restrictive government regulated items and baffles, so their car will actually go faster and respond to straight into the intake or straight out of the exhaust performance.

With aftermarket CAI's you actally benefit, with better miles per gallon and performance.

The part I highlighted above is the answer to why that is.

Pretty sure he meant argument for not against since he said argument for a CAI

jcampos · 05-26-2016, 05:39 PM

Quote:

Originally Posted by deweyg63

Pretty sure he meant argument for not against since he said argument for a CAI

06-14-2009, 02:45 PM

Did you happen to notice this thread is 7 years old... "slow clap"

06-13-2009, 02:38 PM	#1
davidj Drives: . Join Date: Mar 2009 Location: Ventura, Ca Posts: 327	Factory Air Inlet Resonators I came across this info and thought it was interesting; Air Inlet Resonators What's up with all the goofy warts and tubes on the inlet duct for the Camaro SS V-8? These are known as Helmholtz resonators, and help the Camaro pass federal drive-by noise standards, and to reduce unwanted resonances in the induction. They have to be different sizes and shapes to target different frequencies at different levels of attenuation. For a given atmospheric pressure, the longer the resonator, the lower the affected frequency. To attenuate a frequency (reduce its loudness) the length will be a multiple of the affected wavelength. Also, the wider the aperture, the greater the attenuation at that frequency. These two photos show three different Helmholtz resonators which target three specific frequencies. p.s. Just realized should have been in engine forum. __________________

06-13-2009, 04:12 PM	#2
LDGn63 Drives: WNABEE Join Date: Jan 2009 Location: DFW Posts: 538 View My Garage	I wondered what the heck but figured it had to do with sound in some way. Thanks! __________________ Why oh Why? Windshield=10" vertical mirror= 3 7/8" (that's almost 4") vertical that means that the mirror is 38.75% the size of the vertical windshield... it sure seems like the ratio could be better... just sayin.... our collective MIRROR patch: http://www.camaro5.com/forums/showthread.php?t=24612

06-13-2009, 05:38 PM	#6
AG454 I am not "Fast & Furious" Drives: 2010 Camaro LSX454 1LE Join Date: Nov 2008 Location: Greeley Colorado Posts: 1,040 View My Garage	Anybody know what size this air inlet tube is? It looks like 4 inches, I want to bulid a custom CAI. Thanks. __________________ The day I take a bend too fast Judgement that could be my last I'll be wiped right off the slate Don't wait up 'cause I'll be late, I'll be late

06-13-2009, 06:26 PM	#8
Supermans Camaro & Stang Enthusiast Drives: 2011 Mustang 5.0 in Kona Blue Join Date: Mar 2008 Location: Miami Posts: 4,729 View My Garage	Getting rid of it should be good for at least 1 HP gain ..lol.. 427HP here I come.. __________________ Bought my Camaro from Eric Hall(817) 421-7266

06-13-2009, 06:45 PM	#9
PAUL SS The Mark of Excellence Drives: 2010 ABM 1SS RS LS3 Join Date: Jan 2009 Location: Smallest State in the Union Posts: 8,688 View My Garage	That's a great argument for an aftermarket cold air intake. __________________ BMR, CAI, DynoMax, Elite Eng., Hurst, Jannetty, Clear Image Headers & Hi Flow cats, Jet Hot, LSR, TSW, VMax, Vredestein

06-13-2009, 04:25 PM	#3
2SSRS@Gen5diy Drives: 2014 Z/28 #82+#192, 18ZLE 66Nova Join Date: Oct 2008 Location: By the lake in AZ Posts: 15,728 View My Garage	Good post thanks for the info.

06-13-2009, 04:37 PM	#4
Gameover Drives: 2010 2SS/RS ABM Camaro Join Date: Mar 2009 Location: San Antonio Posts: 502 View My Garage	Interesting!

06-13-2009, 05:32 PM	#5
yob2kanobe Drives: Corvette ragtop Join Date: Jul 2008 Location: Washington State Posts: 15	one of the first things to go when I get mine. I want it loud!

06-13-2009, 06:22 PM	#7
JJ2010 Drives: 2010 Camaro SS Join Date: Oct 2008 Location: Smithfield,NC Posts: 1,203	I looked at mine when I first got my car and said what is all this goofy mess.... My LMR CAI will be here soon and all that funky mess will be gone....

06-13-2009, 07:43 PM	#10
fldrummer "Black Ace" Drives: Supercharged 2010 SS, 2016 Golf R Join Date: Aug 2008 Location: Ft. Lauderdale, FL Posts: 1,350	Yeah, when I saw those on mine, I said "WTF?!" I knew they were for sound deadening, but that's just ridiculous. I said to myself this CAN'T be good for air flow to the engine. 'Definitely going to get an aftermarket intake or CAI, but want to wait and see what other systems come out.

06-14-2009, 01:14 AM	#11
Halo2 Drives: 04 Mercury Marauder Join Date: Apr 2009 Location: NC Posts: 130	Even the GM Performance air intake has one of these on it.

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