06-04-2007, 08:25 AM
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Join Date: May 2007
Posts: 10
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Drilling out gy-5 exhaust
I see a of people here are doing mods to the gy-5 muffler like drilling holes at the back. Does this really give better performance or is it just to make it sound better. And, what about emissions? Can you still pass emissions/inspectoin test if you are streel legal in those states that require them? I know MD, and PA have emmissions tests.
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