Exhaust sound levels. - Ford Mustang Forums : Corral.net Mustang Forum
 
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post #1 of 7 Old 10-16-2015, 04:51 PM Thread Starter
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Exhaust sound levels.

I have Dynomax Ultraflo's. How quiet would a Twin Turbo car be if I added some bullet muffler to the midpipe?

I'm thinking sleeper car with a quiet exhaust.

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post #2 of 7 Old 10-18-2015, 08:04 PM
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Originally Posted by leadfootdriver View Post
I have Dynomax Ultraflo's. How quiet would a Twin Turbo car be if I added some bullet muffler to the midpipe?

I'm thinking sleeper car with a quiet exhaust.
I just added dual 3" Borola mufflers Y'ed from a single 3.5 downpipe outlet. Welded it up myself out of Summit and ORiley parts.

I ran it a pass or two the other day, and everyone says it just makes a whirring wind-rushing noise. It sounds about like my 2014 Mustang stock exhaust at idle.

The data log shows no change in time to get boost (off fast idle 1 second to 15 psi and 1.2 seconds to 22 psi), and no change in boost levels or fuel use, but I would not know if the power changed without doing a before and after back to back dyno pull.



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post #3 of 7 Old 10-18-2015, 10:10 PM Thread Starter
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That's awesome. I think that's what I want. I don't want a loud car anymore.
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post #4 of 7 Old 10-19-2015, 04:42 PM
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You could implement many or all of the ideas we are discussing on this site, and come out with an extremely subtle exhaust note.

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post #5 of 7 Old 10-20-2015, 11:09 PM
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Ultraflos are not quiet. I am adding bullets to help tame them down.
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post #6 of 7 Old 10-20-2015, 11:27 PM Thread Starter
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I agree; they have that rippin' sound. When I went to an X-Pipe on the natural motor, the sound got noticeably quiet. I'm thinking that with 2 Turbo's, the sound level would be about the same.

So if I add Bullets, it should bring it down to a nice level I hope.
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post #7 of 7 Old 10-21-2015, 04:18 PM
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