Does the sound box on the stock C6 air intake duct have a resonance / re: air pulse wave modulating effect? What effects will occur if it is removed? I note CAI do not have one.

 

You are correct or close to it. There are TONs of posting in here about this, a few with very good info. I will spare you the chore of finding them and provide this;

Whatever the proper name of it is... I don't recall or care, but it is basically to act as an air cushion in the air intake system. You must first think of air as a 'fluid', albeit an extremely thin fluid. Fluid dynamics is an important aspects of aerodynamics, as we know. Hang your hand out the window of a moving car, and feel the fluid dynamics happening all around you hand. Cool stuff. SO - think of your entire air intake system basically as a fluid pathway starting immediately after it exits the back of the air filter to finally rest upon the backside of the intake valves. When an intake valve opens, the fluid suddenly rushes in, that action immediately impacts the fluid flow thru that port pathway, and jerking forward a narrow portion of fluid (air) in the intake system. And then the valve slams shut, thus all that fluid momentum must suddenly stop, sending a micro fluid shock-wave back up against the inertia of the forward moving fluid (air). See it in your mind. Now multiply that by 8 intake valves all doing the same thing X rpm = An immense multitude of violent starts & stops in the fluid path going all the way to the back of the air filter, and yes, like countless tiny ripples. THAT is where that little resonate wart thing steps in, since it is connected like a parasite to the side of the intake flow. It is 'suppose to' mitigate &/or greatly reduce any possible fluid flow around and inside the MAF sense hanging smack-dab in the middle of the fluid pathway. Fluid flow disruption was observed in certain tests, creating moderate surging issues at certain rpm, and conditions, according to GM and resident experts here. LOT's of big mind engineering came up with that thing, plus it cost GM to manufacture and stick on there, so YES, it definitely serves a purpose - amen!

BUT.... I can tell you that within the first 2 months of getting my Vette, that was the first thing I tossed, and did it while installing my Catch-Can. This was no cavalier move on my part, and I did have a twinge of self doubt as I was cutting. Honestly from direct experience, the result = Nah-da, I heard and felt nothing, no surging of any kind no matter what I did, just like so many learned voices told us in this forum. So why remove then if it doesn't hurt power or sound? It's in way, it don't belong... it's just a big ol useless hunk of plastic nearly everyone tosses at some point and NO aftermarket system has.

And so - yes, I did and still do question 'why' GM deemed it was reeeeeally needed, and tend to believe, as others do, that it was perhaps actually more likely a bargaining chip with the EPA vs actually doing much of anything... Again, for me; Removing it did absolutely nothing at all to the sound, smoothness or performance of my 2010 Corvette LS3 GS M6.

Hope this helped.

 

Helmholtz resonator. It is supposed to help cancel negative sound frequencies in the intake to help cylinder filling and cancel intake noise. I think it is more for intake noise reduction. The Z06 does not have this chamber on the intake so apparently it makes little to no difference in power.

 

When air is forced into a cavity, the pressure inside increases. When the external force pushing the air into the cavity is removed, the higher-pressure air inside will flow out. Due to the inertia of the moving air the cavity will be left at a pressure slightly lower than the outside, causing air to be drawn back in. This process repeats, with the magnitude of the pressure oscillations increasing and decreasing asymptotically after the sound starts and stops.

The port (the neck of the chamber) is placed in the external meatus of the ear, allowing the experimenter to hear the sound and to determine its loudness. The resonant mass of air in the chamber is set in motion through the second hole, which is larger and doesn't have a neck.

A gastropod seashell can form a Helmholtz resonator with low Q factor, amplifying many frequencies, resulting in the "sounds of the sea".

The term Helmholtz resonator is now more generally applied to include bottles from which sound is generated by blowing air across the mouth of the bottle. In this case the length and diameter of the bottle neck also contribute to the resonance frequency and its Q factor.

 

. Boy that was a mouth full.

 

I bought a stock Z06 air intake and replaced my LS3 air intake. Noticed no difference. I did it just to get that ugly suitcase out of my engine compartment

 

Yours appears to be stock LS3.........Is there a visible difference between the LS3 & LS7 intake. (Are they the same?). How much was the part? I'd like to do the same but I guess it will screw up the tune that Redline did .

 

Won’t mess up your tune. I bought mine on the classifieds here. $75

 

thanks

 

Ha, ha... love this forum. Yeah, all of that is what I was trying to say, ha, ha......

 

Is there a size volume difference LS3 vs. LS7 intake.. throttle body opening same?

 

Take one off, transfer the MAF, and put the new one on

 

. In other words, they are the same diameter.

 

Yes

 

I could just cut off & seal the resonator tube.

 

Lots of C6 owners have already done this. $5 in supplies from the plastic plumbing section of your local hardware store and you've good to go.

I also considered trying to just make a patch out of JB Weld, but ended up finding a used CAI for cheap I stead.

 

I'd like to find a cheap LS7 air filter bridge...patience!!

 

Shipping is what the killer is on these.I was thinking about selling my spare but the shipping cost wouldn't make it worthwhile.

 

I'll shop local South Florida

 

This. Less then $4.00.