I just installed a Yoshi RS-3 full exhaust and a Pro Flow K&N Intake on my 04 Raptor. Yoshi recommends 150/155 jets. I will not be using the airbox lid and I ride between 5000 and 8000 feet above sea level. Do I just need to change the main jets or the pilot jets as well? Is 150/155 a good starting point or does anyone have other suggestions/recommendations.

 

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