Raptor 660 Jetting - Yamaha YFZ450 Forum : YFZ450, YFZ450R, YFZ450X Forums
 
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post #1 of 1 (permalink) Old 04-19-2016, 09:38 PM Thread Starter
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Location: Spokane Wa.
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Raptor 660 Jetting

I am going to the Dunes in Florence Or. I know I have to put in bigger jets. But how much bigger. Stock eng with a LRD Pro 4 Pipe./ Opened up the Air box lid. At 2300 ft It is running on the lean side now with a 150 and a 152.5. Going to sea level.

1 Raptor 660
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