Hopeing sombody could give me some input with the tuning of my 2005 YFZ 450SE. I put a DRD slip on, pro-design adpter and filter, a 175mj, a 145pj with it adjusted 2.25 out, and the needle clip in the #6 position. All the changes I have made have been suggested by DRD. Their pipe and tech support are great. The quad is very fast but seems to need some tweaking or there is somthing wrong with it. The top end of 2nd and 3rd gear seem to bottom out, or not be as strong as they should be. The jets I installed were blessed by DRD and are bigger then their normal recipe calls for to compensate for having a K&N filter. Any inputs would be much appreciated.