I was wondering what jetting specs you guy's are running on your raptor's with the FCR's installed.Mine is internally stock for now and I was wanting to know what jets,needle's etc I should start off with.My mods are a Spark's pipe,Pro flow kit but I will be removing the air box completely for a dual k&n setup.

 

142/145 mains, OCEMR needles on third clip from the top, pilots 2 1/2 turns out. This was at sea level with a stock motor, full yoshi exhaust, K&N w/o airbox, and pretty cool outside temp. There's still some tuning to do but this will get you in the ballpark.