I recently purchased a dyna FS ignition on ebay. I got it yesterday and hooked it up. WOW!!!!, I couldnt belive how much smoother and more powerful it was. It even pulled really tall gearing, 13/48. Before, It would bog when I would barly go, but now it pulls it just fine. My niehbor rode it and was amazed. he said it was faster than his 01 cr250 with fmf pipe and silencer. Because my bike is stock, stock pipe and everthing, he thought I did some engine work or something. I highly recomend this ignition, but it is a little pricy, 325$ new, mine was 60$ on ebay.