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Thread: Code 13 Always lean

  1. #31
    Senior Member mmcn49's Avatar
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    Jan 2010
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    Small Island in Puget Sound, WA
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    Quote Originally Posted by The Pilot View Post
    I have the most current version of ECMspy, but the tune was uploaded with ECM droid as sent to me with no changes. Only got spy just to make sure the map was not jumbled up like I have seen happened to some other people after I found out I had a problem.
    I've used the old ECMSpy & MLV to tune with good results. With the old ECMSpy you're able to get a 3D view of the fuel and timing maps. Comparing the maps makes it pretty easy to see where there are substantial differences. If you know the approximate throttle position and RPM where the issues are happening, you can smooth out cells in the problem area.

  2. #32
    Junior Member
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    May 2020
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    Okay, having read through this thread, arguments and tuning aside, I have the same problem and have done the same things on The Pilot's list. The only difference is that I'm running an APH exhaust but free-flow none the less. I have also gone back and forth with stock vs race eeprom. the problem always remains. I've also renewed inlet seals. Even got the standard ones to seal! Third attempt, anyway. My plugs, however, confirm that the rear cylinder is running a bit lean and the front is running rich. I've disabled the O2 sensor making changes by taking off open and closed loop learn and setting the max afv and ego corrections to 100. So, where now? would/ could a head gasket leak cause this intermittent fault and lean code? Any other ideas?

    Thanks.

  3. #33
    Junior Member The Pilot's Avatar
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    Well Chef, it probably won’t help you but for my issue I finally just got a new IDS ECU. Installed it today and the bike runs fantastic, no more code 13 at cruise at any speed. Engine seems smoother on the highway as well. Lots of pull... feels like a different bike.


    Last edited by The Pilot; 06-04-2020 at 01:24 AM.

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