does this sound about right stock raptor other than white bros slip on,stock filter around 800ft above sea level mains 155/160 neadle in stock position.thanks

 

are those dyno jets or mikunis?

 

mikuni

 

Well, I dont know about mikunis, but my brother is running 150/155 Dynojets with no lid and e-series pipe @ sea level...dj's and mikuni numbers are not comparable so I dont know if what you are running is ok. Just check your spark plug..it should be tan, sorta rust color.