The Polaris RZR air intake system is notorious for not filtering well….the 2008 models had major issues with particles in the throttle body, and while the 2009-2010 models are improved, it’s nothing more than a band-aid over a machete wound.  Don Herman from D&L Machine outside Oklahoma City discovered this issue early on with his 2008 RZR and started hunting down a cure.  Not finding exactly what he wanted, his wife Liz finally told him what he needed to hear:  make it yourself! Read More→