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Edmunds Project Evo X dyno comparison of AMS exhausts

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Old Mar 13, 2009, 02:35 PM
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Edmunds Project Evo X dyno comparison of AMS exhausts
Dyno comparison of the AMS twin-tip exhaust and the AMS single exit exhaust for the Evo X: linky poo

And before you ask why that dyno reads so low, go here.
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Old Mar 13, 2009, 02:47 PM
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Now if it would be released.... I'd be a happy camper.
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Old Mar 13, 2009, 04:11 PM
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I would like to see the dual exit installed on the vehicle. It looks fresh to me. I'm sure it will be pricey.
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Old Mar 13, 2009, 08:32 PM
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i want this to be for sale so i can buy it and take picks and show everyone
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Old Mar 13, 2009, 10:54 PM
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Neither link works.
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Old Mar 14, 2009, 04:04 AM
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I'm wondering whether 4 db differential between the single and dual AMS is really a significant reduction in sound. What are the db levels with the OEM dual? For it is this differential that will determine whether you are pulled over or not. My AMS single is loud, not so much at idle but when downshifting and under boost.

Later, Ken
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Old Mar 14, 2009, 10:08 AM
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In terms of sound, 3dB higher would be twice as loud. The human ears may perceive things differently than that of a SPL meter. Different frequencies will have different impact on what the brain deems as "loud". Hope this helps.
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Old Mar 15, 2009, 12:24 PM
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Originally Posted by mrdecibel
In terms of sound, 3dB higher would be twice as loud. The human ears may perceive things differently than that of a SPL meter. Different frequencies will have different impact on what the brain deems as "loud". Hope this helps.
Thanks Deci, Did not realize the scale was logarithmic.

Later, Ken
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Old Mar 15, 2009, 02:46 PM
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Can someone post the proper link to access the entire edmunds project from start to finish. I can't seem to be able to find the whole thing, only parts. Thanks. this would be a good sticky.
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Old Mar 15, 2009, 03:35 PM
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Here is the blog for Project Evo X:
http://blogs.edmunds.com/roadtests/V...cer-evoluti-1/

...which is itsef a sub-set of the main road test blog:
http://blogs.edmunds.com/roadtests/
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Old Mar 15, 2009, 10:26 PM
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Thank You.
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Old Apr 3, 2009, 06:21 PM
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i wonder how well the dual exhaust will perform with higher hp's? am i thinking this one too much? it would seem that the dual will perform the same up to a certain point and then start degrading.
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Old Apr 8, 2009, 12:13 PM
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It should perform better actually. There's no muffler to go through when you're using the completely open plate.
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Old Apr 8, 2009, 02:31 PM
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Originally Posted by Thegame
It should perform better actually. There's no muffler to go through when you're using the completely open plate.
thank you.
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Old Apr 15, 2009, 10:31 AM
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is AMS still gonna make the dual?
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