Which is better, K&N filter with holes drilled box or PRO-FLOW design system? Or they about the same thing. Does the PRO-FLOW run with lid on or off,if off, what do you do with the hose from the air filter lid that goes to the engine, pvc, case breather line or something like that??

 

The pro flow kit is the best. You can get it with either a foam or K&N filter. Yes, you can run w/o the lid if you use the Pro flow kit. If you just install a K&N, you must use the lid. Alba Action makes an aftermarket airbox for the warrior also. It looks pretty sweet. I wouldn't recommend drilling holes in the box either.

 

I run the Proflow on my Pro Design adaptor with a Pow Roll Moto Force clear vented lid on my Warrior which gives 90% of the flow of an open box. As yet, Powroll isn't making a lid for the Raptor but I'll have one when they do.

 

Has anyone tried those vented lids that are not supposed to let any water in, But still flow at like %80 of an unlidded system??

 

Does the pro flow box replace the entire stock box and do you get a foam filter element and attachment with the pro flow.Do I ask for a pro flow or pro design kit ?