I sorted my KLX with my second rejet, but it would surge at WOT so i pulled the kdx300 snorkle and it fixed the issue. But I don't like not having a lid or snorkle. I took my KDX300 snorkle and cut off the part that hangs below the lid and Whalla, still have the snorkle above the box for water intrusion and no restriction below the lid. I just got back from a WOT test drive and it pulls the same amount of air, no surging and still looks factory under the seat. I also didnt like the extra noise before.