Finally jetting

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raptor350main

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Joined
Apr 21, 2005
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Location
Madisonville, Kentucky
ok im finally going to jet my raptor after forever. All it has is a fmf powercore 4 slip on and a pro design K&N kit. Where i live its about 80 degrees but getting colder
 
theres a bunch of tutorials about this but i think you should go at least 5 sizes up and work your way up or down
 
what you need to do is get a fresh plug reading and determine if your rich or lean and by how much. Then from there Id jet based on the results and go up a size after you get it right to comp. for winter and the cooler weather ahead.
 
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