Hey Honda 400extreme, you ever heard of a prefilter?

 

Balld - My jetting is 170/175 and at sea level it works perfect. No popping or missing at all. Wtec - I think a prefilter is just a outerwear thing.

 

wildchild thanks.

was also wondering what your pilot jets are at and your needle?

I am 27.5 pilot and forth spot down on the needle it runs rich first thru third then seems to run lean fourth and fifth.

 

I honestly cant help ya there cuz I dont remember what their at. All I know is the mains and I didnt mess with the pilots or the needle because it ran fine after I went with no airbox. Ask sixsixt he can probably tell you or at least help.

 

This kind of setup was on my warrior when i bought it, and it hasnt given me any probs. I do steer clear of mud and water. I clean and oil it pretty regularly, and it seems to do just fine. Not sure about performance though, because it's all i've ever known.