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Cooter
04-16-2018, 10:21 PM
Cross posting from BuellXB.

I had some fun with wrenches and thought I'd share:

https://www.youtube.com/watch?v=a2lqBS2gSmk
https://www.youtube.com/watch?v=a2lqBS2gSmk


The victims:
https://farm1.staticflickr.com/804/41421005951_e7a8479b66_b.jpg


(Spoiler) The winner:
https://farm1.staticflickr.com/897/40525752005_b75c8a212b_b.jpg

Cooter
04-16-2018, 10:22 PM
Ok that was fun... so heres the info
I did all the testing with the most appropriate ECM, in the same location using the Niosh iPhone app 6' from the tip, in a 4000' bldg, warm engine.
Idle, 5k and 7k.


Stock resonator 80dB, 94dB, 100dB (Quiet. Too quiet and rattly)
Stock muffler with 2.5" tips on the OD of the muffler outlets 88dB, 97dB, 106dB (really nice deep tone and mellow volume)
Open headers (LOUD) Probably maxed the 'meter' and the snow falling is insulation from the roof. 102db, 117dB, 124dB! (The dead are coming to complain about the noise)
APH RACE Y-pipe only 100dB, 111dB, 118dB (Meaty)
APH RACE y-pipe and muffler with single tip 90dB, 105dB, 110dB (Deep tone, and ok on the highway but your neighbors hate you. It's totally worth the performance increase though:D)


On to the vids!
Stock resonator:

https://www.youtube.com/watch?v=kszJ4D1emX4

Cooter
04-16-2018, 10:22 PM
Tips:

https://www.youtube.com/watch?v=dy0gHkPAc_4

Cooter
04-16-2018, 10:23 PM
OPEN!! I SAID OOOPPPPEEENNN:

https://www.youtube.com/watch?v=ymFFFDZYsYk

Cooter
04-16-2018, 10:24 PM
APH RACE Y-pipe:

https://www.youtube.com/watch?v=-tTB2cBrviA

Cooter
04-16-2018, 10:24 PM
APH RACE Y-pipe and muffler (single outlet)

https://www.youtube.com/watch?v=FsacXR-z7Tg

Cooter
04-16-2018, 10:25 PM
Anyone want to send me a Keda or HMF, I'll take it:D

Doug Porcaro
04-17-2018, 02:03 PM
Nice!

EBRRider
04-17-2018, 03:39 PM
That is Great stuff thanks for posting and taking the time to test!!!!