People lose site of what the Dyna is for. There is no dispute that Drag bikes make big power and run stock cdi's and stators. Heck I run a stock stator with a dc conversion. However Drag bikes operate in a tiny little rpm window at the upper rpm and its not hard to just set up the timing and have them be ok with a stock cdi. A serval is made for low-mid power. It was designed for using all different ranges of the power curve, so having an ignition like the dyna can emphasize these ranges through its alternate curve settings. rolling off the throtle and back on for whoops, trails, hills, etc.........is something the Dyna does better than a stock cdi, and you can feel the difference it makes in these lower rpm areas.