I recently made a snorkel for my intake on my 05 king cat 900efi and all I have to say is that's the best $40.00 and 1 hour I've ever done for my cat. I had seen pictures on some really old post on this forum and never thought I would need to make a snorkel until recently riding in Washington state in 3 ft of powder my sled would choke it self out. I also added snow pre filters to my intake vents by feet and my speedo hole. It even helped with the right side bog. Just a quick wipe around the speedo hole in the super deep snow and she keeps running hard. Also I had to unplug my computer so she didnt run so lean. Also I have a slp pipe and mhrp can.