[N Camarolina]

Good pattern spotting vtirocz. Anyone have a theory as to why the 1SS should get the sound tube, but not the 2SS or LT1?

[vtirocz]

Originally Posted by N Camarolina

Good pattern spotting vtirocz. Anyone have a theory as to why the 1SS should get the sound tube, but not the 2SS or LT1?

My theory is that sales are relatively poor and they're looking for different ways to cut cost out of the model with the trade-off being some "degradation" in sound quality.

Why keep it only on 1SS and remove it on 2SS & LT1? Here's some thoughts:

• LT1 is the "budget" option that prioritizes cost savings over any small improvement in sound.
• 1SS is for the "track enthusiast". The feature is already developed and implemented, so keep it.
• 2SS is the "luxury option" with Bose stereo --- maybe they thought this customer would not care for it or notice it as much?

They may also have a longer term goal of cost reducing it out and need to use up the existing inventory on the specific model where they think the customer might notice it most.

[Petrol Head]

Originally Posted by vtirocz

My theory is that sales are relatively poor and they're looking for different ways to cut cost out of the model with the trade-off being some "degradation" in sound quality.

Why keep it only on 1SS and remove it on 2SS & LT1? Here's some thoughts:

• LT1 is the "budget" option that prioritizes cost savings over any small improvement in sound.
• 1SS is for the "track enthusiast". The feature is already developed and implemented, so keep it.
• 2SS is the "luxury option" with Bose stereo --- maybe they thought this customer would not care for it or notice it as much?

They may also have a longer term goal of cost reducing it out and need to use up the existing inventory on the specific model where they think the customer might notice it most.

Goes back to my $3.5m cost savings estimate. Thing is they could have saved a lot more by not even spending time and material designing it or building it to begin with. I know there’s video of a 6th gen engineer in a sound lab with an LT1 equipped 6th Gen prototype and a washing machine drain hose analyzing engine sound with a laptop and microphone in the interior.

Just for interior engine sound.

If it improved performance I’m all for it. Noises and sounds? No.

[UnknownJinX]

Originally Posted by Petrol Head

Goes back to my $3.5m cost savings estimate. Thing is they could have saved a lot more by not even spending time and material designing it or building it to begin with. I know there’s video of a 6th gen engineer in a sound lab with an LT1 equipped 6th Gen prototype and a washing machine drain hose analyzing engine sound with a laptop and microphone in the interior.



Just for interior engine sound.



If it improved performance I’m all for it. Noises and sounds? No.

Then again, car companies spend effort on piping in fake engine noises with speakers, which are generally considered far worse. But that's sound engineering for you.

I mentioned this to you before, but that car door shut sound is also engineered to sound more solid. Not functional, but I don't see people crying foul over that.

https://melmagazine.com/en-us/story/...nd-engineering

Also $50 for some plastic tubes? Cut me a break. In a manufacturing setting, it's probably $20 or less for a car.

[Petrol Head]

Originally Posted by UnknownJinX

Then again, car companies spend effort on piping in fake engine noises with speakers, which are generally considered far worse. But that's sound engineering for you.

I mentioned this to you before, but that car door shut sound is also engineered to sound more solid. Not functional, but I don't see people crying foul over that.

https://melmagazine.com/en-us/story/...nd-engineering

Also $50 for some plastic tubes? Cut me a break. In a manufacturing setting, it's probably $20 or less for a car.

https://www.gmpartsstore.com/oem-par...-pipe-23340377

That’s the cheapest I’ve found

[UnknownJinX]

Originally Posted by Petrol Head

https://www.gmpartsstore.com/oem-par...-pipe-23340377



That’s the cheapest I’ve found

That's the retail price.

In a manufacturing setting, it would cost far less to produce.

[MackSteelPrivateEye]

Originally Posted by ApexSummit

It comes off the intake and pipes into the firewall. Suppose to amplify engine/intake sound. Ford refers to it as a sound symposer on the Focus and Fiesta. I think it's downright silly and removed it from my current car and was looking to remove it from the Camaro.






It's the line coming off the intake as seen in this picture.

So whats the purpose of this said..."Sound Tube"?🤔I mean what do it do?

[Aragorn]

Originally Posted by MackSteelPrivateEye

So whats the purpose of this said..."Sound Tube"?🤔I mean what do it do?

Transmits intake sound.

[Petrol Head]

Originally Posted by MackSteelPrivateEye

So whats the purpose of this said..."Sound Tube"?🤔I mean what do it do?

If you click on the link I posted in my previous post, you’ll see there’s a larger assembly at the end of the hose. Inside that assembly is a diaphragm. The air going through the intake creates vacuum that moves the diaphragm which is tuned to the engine sound. The sound that comes into the interior you’re hearing is not the actual engine humming, but air from the intake vacuum amplified by the diaphragm. It’s really an air motor.

[Ventmaster]

Originally Posted by MackSteelPrivateEye

So whats the purpose of this said..."Sound Tube"?🤔I mean what do it do?

Makes you wonder how GM ever got the SS past Federal sound limits on these cars.

If you've got the NPP, put in track mode and nail the gas a couple of times in downtown traffic, you'll be looking for a side street to hide on before you know who comes looking. Your passengers will be impressed. It may not be "real" but it sounds awesome!

If you're looking to keep a stock exhaust awhile but want the sound you paid for, install a sound tube. I happen to have a complete one for sale BTW from a 2017SS. Drop me a PM. Complete- not just the first half at the GMpartsstore, $20 bucks plus shipping.

[WHealy]

A few quick pics of 2021 LT1 with no sound tubes from the factory.

[vtirocz]

Originally Posted by Ventmaster

Makes you wonder how GM ever got the SS past Federal sound limits on these cars.

If you've got the NPP, put in track mode and nail the gas a couple of times in downtown traffic, you'll be looking for a side street to hide on before you know who comes looking. Your passengers will be impressed. It may not be "real" but it sounds awesome!

If you're looking to keep a stock exhaust awhile but want the sound you paid for, install a sound tube. I happen to have a complete one for sale BTW from a 2017SS. Drop me a PM. Complete- not just the first half at the GMpartsstore, $20 bucks plus shipping.

The sound tube has nothing to do with that noise requirement.. that's all in the NPP calibration. It is a clever way to pass that test while providing the enthusiasts with a good sounding exhaust.

[vtirocz]

Originally Posted by WHealy

A few quick pics of 2021 LT1 with no sound tubes from the factory.

Looks clean! That matches up with the trend of LT1 and 2SS do not get the sound tube, while the 1SS does on MY20 and later vehicles.

[lowandslow88]

anyone found the GM part no's for the plugs?