Originally Posted by TwinsPoppa
I like this idea. I left all the silver shims and took out both red ones (~500). I think I'll try and put one red back in (~650).
You are better off closer to 500 than 650. On MOST Ninja, tanks, take out both Red shims, and leave any silver ones, usually will end up 500-550 psi. Only way to know for sure is to throw a gauge on it.