2012 wr450 starting problems after overheating

My idle was only 1600!! I set it to 2100. Heres the good part, my ECU settings were completely changed.??????? On 11/14 I reset my ECU to the "GYTR by FMF exhaust" settings.                            FUEL: 3/4+2,+3,+3   3/8+2,+4, +4   1/8+2,+4,+4            IGNITION: 3/4+2,+2,+1   3/8+3,+3,+2.  1/8+3,+3,+3        When I checked the settings today, they were completely changed!!!        FUEL: 3/4-2,-4,-4  3/8:-2,-4,-4  1/8-2,-2,-2          IGNITION: 3/4+3,+2,+2  3/8:+3,+3,+2  1/8+3,+3,+3      As you can see the ign settings stayed close but the fuel was way changed. So my Comp ECU somehow changed on its own.   Since I raised the idle and remapped, I'm starting 1st press of the button again. Let you know in a few days how its going.. Looking GOOD, Thanks All.

How can the ECU mapping change on it's own?

I misinterpreted what I was reading on my GYTR power tuner. It was a previous map I had used labeled Sharp/Street. I liked the throttle response on this mapping but it made my header cherry red so I changed it. Nevertheless with the idle adjust and reprogram my bike is running and starting perfectly. Just rode the same trail run as yesterday, where I stalled 4 or 5 times. Today after the reprogram and idle adjust, no stalling and the bike has started first time everytime! My bike just went through a torture test and came up ACE's. I expected the worst scenario and ended up with the best. Yamaha truly makes an awesome machine. Will post a vid of today's ride. The difference is Amazing from yesterday. I would have to say my starting issues were mainly idle related.









Glad you got it sorted out.

Edited by RRM707

Lucky you didn't toast the motor! Just out of curiosity, were you running a synthetic oil?

My guess is that the answer is yes

I dont think an engine with conventional oil could have survived that

Congrats! Yet another Warrior Racer story for the WR. Now go purchase a lottery ticket because you are one lucky MF!

I use Yamalube 10/40. I think my saving grace was the cold temps. I have stood by my WR since new vs. The 30 lb and 3k, more expensive pumpkins. This situation has locked me into the WR for years to come. I spank all my KTM riding buddies now. LOL. Wait till we go 30 lbs lighter ad a 6th gear with a street legal title. Love my WR. One of the best bikes I have ever owned, as well as my YZ.

 I spank all my KTM riding buddies now. LOL

Didn't realize that you were into that, but hey, don't ask, don't tell.....to each his own.



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