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  1. YFZR-X Powertrain
    hello i have a 2022 yfz450r that has ais delete, full dasa 99db exhuast, fci intake, msd blaster efi and just ordered 38 motosports breather box im trying to get my yfz to stop back firing on decel and when i press the gas really fast on idle it bog anyone have similiar mods with a good map for...
  2. YFZ450 & YFZ450R General Talk
    i have a 14 yfz450r fuel injected. ever since i installed my new exhaust and intake, it sounds like an ak-47 once i let off the throttle 🤣🤣. the back firing is crucial. not wanting to spend 800$ on a vortex. could a power commander fix the back firing?
  3. Maintenance
    I have an 2004 Yfz and it backfires, won’t idle for more than 10 sec and is hard to start. I am looking for answers
1-3 of 3 Results