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Discussion Starter #1
I have an 07 sportsman 500 HO efi I found a fairly inexpensive way to customize my stock muffler and was wondering if it will effect the way the machine runs without doing something to the efi system. just lookin for some tips
 

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so what did you do to

that exhaust? cut it all out, 100% free or something in between? Most engines are designed for some exhaust resistance...:cowboy:
 

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Discussion Starter #3
I want to cut the back of my muffler out and weld a tip on does anybody out there have any tips I have a 07 500 HO EFI
 

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There is a thread on this mod where each guy did there own variation of it. Some completely gutted, others took one or two baffles out, one guy added another j pipe, some cut the j pipe out covered the hole and drilled a hole out the back everyone going with different sizes. If i find it ill post it.

Sent from my SGH-I337M using Tapatalk
 
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