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i was going to send my head down to a machine shop and get some porting done and a 5 angle valve job. i was wondering if anyone else had it done, if so tell me if its worth it
 

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I'd only do it if your seats are worn. If they are in good shape I doubt you'd notice any difference in performace.
 

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daddog rider already had some porting done and he said that the gain is minimal over a air intake, cam mod, exhaust and jetting mod.
 
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