I have already pulled the snorkle.
I use a UNI filter.
Not too enthusiastic about cutting up the top of the airbox. Deep water crossings sometimes, and anything to prevent water entry is my friend in my opinion.
The bike has a DJ jet kit. Until recently, I used the DJ140 main jet, but last week while cleaning the carb, I switched down to the DJ136 main jet. DJ needle on the #3 slot per their instructions, and drilled slide.
42 pilot jet due to a hesitation issue and hard starting. This solved it.
MC power mod done as well
Edit: I weigh 230 lbs.
2003 KLR 650
Cogent suspension front and rear, jet kit, Lexx pipe, Uni filter, D606 tires