Drilled Mufflers

Did you use a hole saw? Looks to be about 1". Did you do this before you put the true dual headers on? Just wondering what difference it might make with stock headers. Great mods BTW.
Center punched them & used a unibit 1" it just lets the bike breath better, try it if you do not like it put a 5/16 bolt nut & two big washers to fill the hole. It sounds really good to me
 

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