"Sound Tube Mod" MUST TRY!!! FREE MOD!!! - Page 7

F1FTY · 11-26-2017, 06:05 PM

Ended up putting mine back in. Definitely prefer it with the foam back in. You hear less resonance in the cabin while also getting more exhaust noise.

T32803 · 11-28-2017, 12:53 PM

Seems like everyone likes it at first with the foam out but
later decides to put it back in.

One person reported a foam stopper depth of 1 3/4 inch
One person reported a foam stopper depth of 1 1/8 inch
Clearly the depth of these foam stoppers vary in depth.

I am surprised no one is playing around with different foam
stopper depths to see if they can tune the sound..

Burly · 11-28-2017, 01:01 PM

Quote:

Originally Posted by T32803

Seems like everyone likes it at first with the foam out but
later decides to put it back in.

One person reported a foam stopper depth of 1 3/4 inch
One person reported a foam stopper depth of 1 1/8 inch
Clearly the depth of these foam stoppers vary in depth.

I am surprised no one is playing around with different foam
stopper depths to see if they can tune the sound..

Still have mine out. Mine was bunched up and kept that shape after I took it out. I had to use a 5" hemostat to get it out, so I think it was at least 3" deep. When 4 Cylinder mode kicks in it does sound bad...

Gen6 softtop · 11-28-2017, 03:59 PM

M6 SS convertible here! I like it you don't hear any thing till around 4500 with the pedal down, when your making power you can now hear it! My foam insert was two inches approximate

PolynesianPowerhouse · 11-28-2017, 04:17 PM

anyone know if the foam is also in there to keep unwanted air from entering the system AFTER the maf sensor?

thescreensavers · 11-28-2017, 04:28 PM

Quote:

Originally Posted by PolynesianPowerhouse

anyone know if the foam is also in there to keep unwanted air from entering the system AFTER the maf sensor?

no its purely for sound

T32803 · 11-28-2017, 08:33 PM

I have an A8 so I know I'll hear the dreadful noise when it drops into V4 mode. But I also know my exhaust is way quieter than other 2LTs I have driven. I haven't taken mine out yet but I will probably cut the depth as opposed to yanking it out completely.

So the depth range is now 1 1/8" all the way up to 3" !!

It also looks like some people have solid looking cylinder shaped piece of foam while others look like they have a folded up sheet of foam that was just shoved in there.

NY Andrew · 01-27-2018, 05:29 PM

Does the V6 have this? Because I can’t find that specific tube..thought we had it as well. Thanks.

T32803 · 01-27-2018, 06:59 PM

Yes the V6 has a sound tube for sure. I have the V6 and took the foam out.
I, like some others, will be putting it back in. When the foam is out, I hear
too much suffering/moaning kind of noise when the car is driven lean to
conserve gas.

NY Andrew · 01-27-2018, 08:45 PM

Where’s it at in V6 any pic or vid?

Assuming you guys don’t have any exhaust work done? I can def see V4 causing it to sound like trash, but with it disabled and having exhaust work done it shouldn’t sound that bad?...

Driski · 01-28-2018, 06:36 AM

Quote:

Originally Posted by alexandre_baril

Did the mod yesterday on my manual SS and I was septic at first it would make a difference, given the size of the foam removed. But it is crazy the difference it makes. A lot louder and it is also changing the tone from the inside of the car. I would say less raspy now, probably because I not only hear the exhaust now and this is something very nice. I like not having all the sound coming from the back of the car, it feels more natural now, more balanced, even if this "device" seems to be a fake sound device.

Also, by removing the foam, I did get rid of that "pffff" sound I could hear at low rmp. I was not aware that was because of the foam.

In any case thanks for this, this is very cool.

Now that caught my attention!

"I did get rid of that "pffff" sound I could hear at low rpm".

I had ordered a Range AFM Delete device in hopes of eliminating the pfff sound. I also bought a switch to go along with it so when driving highway I can switch it off and utilize AFM. So, if after removing the foam, the drone is too much at highway travel, I can switch the AFM back on and lessen the noise others are reporting.

I will remove the foam, and install the Range device, when I dig the car out in the spring and try it out... very exciting news since all other mods cost hundreds of $.

WhiteKnightSS1LE · 01-29-2018, 05:45 AM

Quote:

Originally Posted by SimMan

So I did the mood on Sunday. Love the new sound. I find that it is only loader up until about 1600 rpm our when I punch it, and even at that it cuts out before the car gets to 2k. I run the my car in sport mode all the time with track tuned on the exhaust mode. I haven't pulled the fuse for the exhaust, but I'm thinking of trying that to see if it makes a difference. Anyone have any other ideas.
Oh love the sound will be staying with the mod.

Hey fellow TN dude. I have some vids of revving with fuse pulled, and 2nd cats deleted revving.
https://youtu.be/HvnNKwFtzgI

WhiteKnightSS1LE · 01-29-2018, 10:33 PM

Did this "mod" today. Made a slight difference, but nothing crazy to me. I do have fuse #51 pulled, 2nd cats deleted, and K&N drop-in filter with cut stock airbox.

Driski · 02-01-2018, 03:51 AM

Quote:

Originally Posted by WhiteKnightSS1LE

Did this "mod" today. Made a slight difference, but nothing crazy to me. I do have fuse #51 pulled, 2nd cats deleted, and K&N drop-in filter with cut stock airbox.

What is "cut stock airbox"?

11-26-2017, 06:05 PM	#85
F1FTY Drives: 2018 ZL1 Join Date: Oct 2016 Location: At the Dealership Posts: 1,019 View My Garage	Ended up putting mine back in. Definitely prefer it with the foam back in. You hear less resonance in the cabin while also getting more exhaust noise. __________________ It's been fun, done with GM. 2018 Camaro ZL1 (SOLD) - Blown Airbags 2017 Camaro SS F1FTY Member Journal (SOLD) - Bad Motor

11-28-2017, 04:17 PM	#89
PolynesianPowerhouse Big Samoan ina little car Drives: 2016 camaro Join Date: May 2014 Location: Tofiga Island Posts: 1,872	anyone know if the foam is also in there to keep unwanted air from entering the system AFTER the maf sensor? __________________ Don't sit around and watch everyone else live YOUR dreams...DO SUMPT'N When I see posts asking "whats the best intake, exhaust, etc" .... the answer to that is like a grandfather telling his grandkids "if you put salt on a birds tail, it'll let you catch it" #ThinkAboutIt "Winning Tip: Don't take my (or anyone else's) word for it. GO TEST IT!" - Dennis Grant

01-27-2018, 05:29 PM	#92
NY Andrew Drives: 2016 Camaro V6 2LT RS Fully Loaded Join Date: Sep 2015 Location: VA Posts: 474	Does the V6 have this? Because I can’t find that specific tube..thought we had it as well. Thanks. __________________ Borla ATAK w/ Midpipe, VMAX TB, K&N Filter, Subwoofer, Tinted, AFM Disabler, Vitesse Throttle Controller! ORDERED:08/19/15 DELIVERED:12/09/15 My 2LT Review/Pictures/Mustang Comparison My 2016 Camaro Bose Subwoofer Install 2016 Camaro V6 Stock to Borla Atak Exhaust Sound 2016 Camaro V6 Resonator & X-Pipe Replace with Midpipe & Borla Atak

01-27-2018, 08:45 PM	#94
NY Andrew Drives: 2016 Camaro V6 2LT RS Fully Loaded Join Date: Sep 2015 Location: VA Posts: 474	Where’s it at in V6 any pic or vid? Assuming you guys don’t have any exhaust work done? I can def see V4 causing it to sound like trash, but with it disabled and having exhaust work done it shouldn’t sound that bad?... __________________ Borla ATAK w/ Midpipe, VMAX TB, K&N Filter, Subwoofer, Tinted, AFM Disabler, Vitesse Throttle Controller! ORDERED:08/19/15 DELIVERED:12/09/15 My 2LT Review/Pictures/Mustang Comparison My 2016 Camaro Bose Subwoofer Install 2016 Camaro V6 Stock to Borla Atak Exhaust Sound 2016 Camaro V6 Resonator & X-Pipe Replace with Midpipe & Borla Atak

01-29-2018, 10:33 PM	#97
WhiteKnightSS1LE Drives: 2018 Camaro SS 1LE \ 2006 Z06 Join Date: Sep 2017 Location: TN Posts: 53	Did this "mod" today. Made a slight difference, but nothing crazy to me. I do have fuse #51 pulled, 2nd cats deleted, and K&N drop-in filter with cut stock airbox. __________________ 2006 Corvette Z06 Fully built 824hp ProCharged. (ANGRY Z on YouTube) 2018 Camaro 1LE, ported/polished TB, AFe TB spacer, drop-in K&N air filter, deleted 2nd cats, GMPP strut tower brace, Mishimoto oil catch can, air box mod. LINEITUPRACING on FaceBook

11-28-2017, 12:53 PM	#86
T32803 Drives: Sold it Join Date: Nov 2017 Location: US Posts: 126	Seems like everyone likes it at first with the foam out but later decides to put it back in. One person reported a foam stopper depth of 1 3/4 inch One person reported a foam stopper depth of 1 1/8 inch Clearly the depth of these foam stoppers vary in depth. I am surprised no one is playing around with different foam stopper depths to see if they can tune the sound..

11-28-2017, 03:59 PM	#88
Gen6 softtop Drives: Hyper blue 1ss convertible 6 sp Join Date: May 2017 Location: Munger mi Posts: 205	M6 SS convertible here! I like it you don't hear any thing till around 4500 with the pedal down, when your making power you can now hear it! My foam insert was two inches approximate

11-28-2017, 08:33 PM	#91
T32803 Drives: Sold it Join Date: Nov 2017 Location: US Posts: 126	I have an A8 so I know I'll hear the dreadful noise when it drops into V4 mode. But I also know my exhaust is way quieter than other 2LTs I have driven. I haven't taken mine out yet but I will probably cut the depth as opposed to yanking it out completely. So the depth range is now 1 1/8" all the way up to 3" !! It also looks like some people have solid looking cylinder shaped piece of foam while others look like they have a folded up sheet of foam that was just shoved in there.

01-27-2018, 06:59 PM	#93
T32803 Drives: Sold it Join Date: Nov 2017 Location: US Posts: 126	Yes the V6 has a sound tube for sure. I have the V6 and took the foam out. I, like some others, will be putting it back in. When the foam is out, I hear too much suffering/moaning kind of noise when the car is driven lean to conserve gas.

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