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Old 01-25-2014, 10:37 PM   #1
ezhacker1
 
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Drives: Decepticon - Ravage
Join Date: Nov 2008
Location: San Francisco
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Exhaust sound "scientific" testing

For fun, I did a little exhaust note test @ Idle and 3100RPM. Hope this will help people find exhaust they want.

Car Specs:
No Boost
AFE Intake
50400miles on the ODO
OEM everything else engine/exhaust related besides the tested items

Setup:
Engine warmed up to normal operating temperatures ~175F from my reading
3 feet distance from bumper inline with the exhaust
48khz 16bit. Manual mic level. Only after the fact did I realize, i had both a compressor AND high pass filter on at 237Hz on all of them, so not sure how that may affect the bass of each exhaust, massive Fail on my part.
*I do not have a stock exhaust to test to set a baseline.

Tested:
Muffler Delete (No pipe): https://www.dropbox.com/s/8c16khmt24...0No%20Pipe.wav
DC Sport Axleback: https://www.dropbox.com/s/h8l28gm71l...DC%20Sport.wav
Resonator Back (straight pipe): https://www.dropbox.com/s/iesbvnv8xs...Res%20Back.wav
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Last edited by ezhacker1; 02-11-2014 at 12:43 AM.
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Old 01-26-2014, 12:47 AM   #2
tooter
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Drives: 2012 Yaris L 2dr 5sp
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3 is definitely no pipe

2 is the Megan

1 is the straight pipe... I like that one.

How did I do?

Here's my through the bumper exhaust...

http://www.youtube.com/watch?v=e2X9wPQE2Zw

Greg
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Old 01-26-2014, 01:04 AM   #3
ezhacker1
 
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So very close just switched 2 around, and I know you meant DC sport not megan.

It's interesting you liked number one.

*Looks like no one wants to play. The original post to reflect answers.
It is interesting to note that the sound of the muffler delete sounds actually good, only cuz the recorder wasnt put up next to the pipe opening. The sound bouncing around the house garage also makes it sound nice, verse the other two the exhaust vented straight out the garage door.
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Last edited by ezhacker1; 01-27-2014 at 03:38 AM.
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