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Old 01-27-2004 | 02:08 PM
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csisfun
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From: SG, SINGAPORE
Default RE: Changing mufflers
Ooooo! Just what I needed!

Have we met before?

Anyway, my OS muffler has been modified, theres a little round thing inside the muffler that was removed, as I was told it was restriciting performance. How much RPM will that increase? Can I do the same to the GMS muffler or is there no such thing inside?
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