Hi, just thought I would post this in case any of you guys were planning on putting a jet kit on your bike. I have a 2001 Shawk with D&D Pipes, K&N filter, and now dyno jet kit. I had the common problem of my bike "bucking" or "chugging" around 3-4 rpms once I put a K&N on it. The jet kit worked. The bike runs perfect. I used all the recommendations that the dyno kit recommended. I'm glad I did because tearing out the carb is a bit**.