If anyone can point me in the right direction I would appreciate it. Last fall my 2010 Honda CRF450 started backfiring on decel and my idle knob didn't do much at times. Everyone said either a tune or valves were the issue. Sent my ECU off got it tuned to the elevation and valves checked good as new. Over the winter cleaned everything and replaced all the basics. Went out today in hopes of something different but same issues. Pulls very strong no issues but when I come to a stop it just wants to die at times and then other times rpms very high at idle after riding. Once in a while my light code flashes 1 beep every 3 seconds it seems but not always. What is my next step in fixing this. Do I have to replace the entire throttle body? Thanks in advance everyone this is very frustrating.