Reply To: Miss and backfire under 5k only after engine warms up – 2009 GT650R Forums 🚥 PiT STOP 🔧 Hyosung Technical Help Miss and backfire under 5k only after engine warms up – 2009 GT650R Reply To: Miss and backfire under 5k only after engine warms up – 2009 GT650R Mar 11, 2025 at 1:24 PM #19092 Mark de RooyMember Topics: 5Replies: 64 Sorry the weird sound I hear seems to be as you rev from idle but not all the time. Would this have something to do with idle problems?
