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DIY Exhaust Mod – Gain of 10+ HP!!! DIY Exhaust Mod – Gain of 10+ HP!!!
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Old 05-07-2014, 05:52 AM   #1
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Join Date: Sep 2013
Location: San Diego, CA
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So based on this thread I drilled my muffler. Sounds a little better, but will be returning to stock. There's a slight "hum/drone" that is a bit annoying. May be I drilled holes too big?

Here is stock:
https://www.youtube.com/watch?v=h03dShxx1Xk

Drilled:
https://www.youtube.com/watch?v=fah0Jx_BQ08
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Old 05-08-2014, 09:39 PM   #2
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Garage
How big did you go?
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