Curious what would happen if I drilled a bunch of holes in the muffler

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JTSpeedDemon

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^^THAT!
Swiss cheese mufflers don't work great I'm sure.
If you are wondering about easy performance gains without installing a header, just add a header.
 

Hellion

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Give it a go.

Preferably, drill them all around the current exit hole; just some satellite holes around it.

If you're feeling adventurous after that, consider slicing the muffler open around the seam--I would love to see the inner chamber(s) and baffles.
 

txluke

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I tried it once. I kept hearing metal shaving rattling inside that I couldn't get out. I just didn't want to put it on and have them fall down an open exhaust valve.
 
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