Anyone using the DSP power now valves for YFZ450? I am looking for some more information on them? I know they are cheap. Are they easy to install? Does it really give you more low end power? Would it void my warranty if I installed one?

 

Dirt Rider named the DSP Power Now carburator valves one of their products of the year. From what I have seen on the website for explanations and pictures, it looks like it makes sense to me for more low end power, up to half throttle. I was looking at these also for my Raptor; they are cheap, and are supposed to give you a huge gain in power. Hopefully someone will reply who has them installed.