93 Yamaha XV 750 Virago discussion forum: RE: Excessive backfire?
Title
RE: Excessive backfire? 
Entered by
 
Date
2003-09-25 05:59:18 
You should rejet the carbs. Your header manufacturer should be able to tell you what jet size needs to be used. Did you replace the exhaust gaskets when the headers were installed? If you didn´t, you need to do that too.  
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