Which will give me the most performance w/ out choking or harming my engine? Also I found a power package with an e series exhaust, jet kit, and White brothers power filter for 295 is that a good price? Will an FMF hi flo header fit up to it? Is the WB filter better than a k&n?

 

I run a K&N with Outerwear and also run the EHS lid.. Works just fine...

 

I rode my warrior for um 6 years with no airbox lid and Pro flo K&N w/ outerwear. No problems except in excessive water and a dirty filter i collapsed 1 one time. keep your filter clean and shouldnt be a problem either way.