expansion chamber help

pedropete91

New Member
Local time
9:45 PM
Joined
Apr 24, 2012
Messages
12
Location
Adelaide
hey i have an a80 36t speed carby i put my mates expansion champer on my bike and didnt really make a difference (sound wise) sounded allmost like my stock exhaust when we put it back on his it sounded like a 2 stroke any know why this is?
 
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