Sound Tube Delete DIY - Mustang Evolution

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Old 02-16-2016, 01:41 PM   #1
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Sound Tube Delete DIY

Hey All,

So I wanted to delete my sound tube to alleviate sound in the cabin. That's the only reason, and not to clean up the engine bay. Long story short, I could NOT get to the nut holding the tube to the firewall, nor to the the hole that would have been left, so I improvised. Two 1 and 1/4 rubber chair tips and two 1 and 1/4 clamps did the trick.

Again, looks aren't there, but functionally, I've bypassed the sound tube and reduced cabin noise. I'm pleased with the results.

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Old 02-16-2016, 02:13 PM   #2
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Old 02-16-2016, 02:22 PM   #3
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I know, I know.


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Old 02-18-2016, 05:33 PM   #4
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Function Over Form

Well that does what you wanted to accomplish.
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Old 02-18-2016, 05:39 PM   #5
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Well that does what you wanted to accomplish.

Indeed it does! Boom.


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Old 02-18-2016, 06:29 PM   #6
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And, if you would be so kind, could you describe the difference in sound between having the sound tube in place and having it gone?
In other words, what does the sound tube sound like?
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Old 02-18-2016, 06:46 PM   #7
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Originally Posted by Guard 5.0 View Post
And, if you would be so kind, could you describe the difference in sound between having the sound tube in place and having it gone?

In other words, what does the sound tube sound like?

Absolutely rare color mustang driver! Took it full circle there...

Anyhow... The sound tube added a "whooshing" noise into the cabin which was helpful when I didn't have aftermarket exhaust, as it added a bit of "tone" to an otherwise quiet cabin. But after I installed the exhaust, I found it to be a bit distracting from the exhaust note, with the Mrs even commenting on how she could hear "air" coming from the dash area, muffling the exhaust sound.

So long story short, I removed the tube and now I can hear the exhaust at the rear of the car and not the air sound pumped in through the tube.

Hope that's helpful!


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Old 02-18-2016, 07:00 PM   #8
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Absolutely rare color mustang driver! Took it full circle there...

Anyhow... The sound tube added a "whooshing" noise into the cabin which was helpful when I didn't have aftermarket exhaust, as it added a bit of "tone" to an otherwise quiet cabin. But after I installed the exhaust, I found it to be a bit distracting from the exhaust note, with the Mrs even commenting on how she could hear "air" coming from the dash area, muffling the exhaust sound.

So long story short, I removed the tube and now I can hear the exhaust at the rear of the car and not the air sound pumped in through the tube.

Hope that's helpful!
Very helpful, thank you. I was thinking about ordering a sound tube delete kit, but when looking at the firewall, I thought that the nut there would be just about impossible to get to as well.
Your solution is elegant and effective..........and yes, the Guard GT convertible is a rare animal. It will be interesting to see the total production numbers on my combination.
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Old 02-19-2016, 11:44 AM   #9
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After installing the Borla Ford Racing axle back mufflers, I too found the sound tube annoying. I deleted everything I could reach and plugged the firewall hole. If you look hard you can see my plug, but I don't care.
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Old 02-19-2016, 01:09 PM   #10
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Why not paint the clamps black to match the bay? This way, they don't stand out. 👍
Also, great way to improvise.
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Old 02-19-2016, 05:49 PM   #11
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Just an F.Y.I.-the guys at Blowfish Racing have put a kit together:https://www.blowfishracing.com/engin...elete-kit.html
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Old 02-20-2016, 01:04 PM   #12
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Had my son get bolt off. Smaller hands. Took about 20 minutes, a super short pivot head ratchet and a deep socket.
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Old 02-20-2016, 01:24 PM   #13
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Originally Posted by COYOTE6 View Post
Had my son get bolt off. Smaller hands. Took about 20 minutes, a super short pivot head ratchet and a deep socket.

Nice! Thanks for sharing!


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Old 02-20-2016, 01:58 PM   #14
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I've been curious as to what my car would sound like by deleting the sound tube. I dont hear anything annoying now but then again I installed Roush axel backs with a week of buying my car. So I dont remember the sound in the cabin when it was stock. With this method I can run a quick and temporary delete to hear the difference.
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