RZR 900 Engine When is fuel controller needed? July 9, 2015 I have a 2011 xp900. It has a Kms intake other then that its stock. I’m looking into buying bmp headers and exhaust. Will I need a fuel controller or can I get away without it for now? Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window) Related