RZR 1000 Engine Backfire issue. need help XP1K September 22, 2015 My xp1000 backfires a lot when coming off of full throttle really fast. One loud POP! I always run premium fuel. My spark arrestor screen blew out recently too if that makes a difference. Any ideas? Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window) Related