Recent content by jbrown

  1. J

    What is the clutch lever switch for?

    The crazy advanced timing issue turned out to not be real. It was just FlashTune displaying the wrong timing map for neutral. There is no risk of over advancing with the clutch switch shorted.
  2. J

    I cannot figure this out! Huge power dip.

    Keep in mind that the FlashTune setup does not let you read the existing ECU information. All you can do is replace the entire ECU flash ROM info. The stock ROM data was captured by Flashtune cutting open an ECU to read the data from a hardware diagnostic port. So when you replace the existing...
  3. J

    I cannot figure this out! Huge power dip.

    I don't think there should be any problem with the FT unrestricted ignition timing maps. Others have been using that flash without trouble. I'm assuming your tuner is using the unrestricted maps that FT provides, and has not made additional changes to the ignition timing. Having said that, with...
  4. J

    I cannot figure this out! Huge power dip.

    I don't think the ignition advance differences are responsible for your issue. If I understand the FlashTune ignition timing display, the differences between the stock and unrestricted map2 values are at low to moderate throttle, not full throttle. And the result of too much advance at high...
  5. J

    Anyone change their own tires?

    I've been changing my own tires for 50 years. I now have a cheap HF changer with the MC attachment and home made approximations of the NoMar mount/demount bar . I added some delrin bits to the rim clamps to protect the rim. I also have a pair of Motion Pro BeadPro levers that do OK on breaking...
  6. J

    To flash or not to flash....

    I voted, but since I can only vote once, I thought I'd add that I've probably flashed my bike 30 or 40 times, experimenting with various things.
  7. J

    I cannot figure this out! Huge power dip.

    The FlashTune cable is not just a cable. There is some electronics in it.. I believe they are FTDI cables. At least installing the FlashTune software installs FTDI drivers. https://www.ftdichip.com/Products/Cables.htm These cables have an internal USB uart to send/receive USB protocol data...
  8. J

    I cannot figure this out! Huge power dip.

    That is a comparison of two ignition advance maps, not the actual map itself. Please note that FlashTune (you are showing a FlashTune dialog) misinterpreted the timing advance data. The timing map FlashTune shows as the neutral map is actually an unused timing table. The real neutral map does...
  9. J

    I cannot figure this out! Huge power dip.

    I understand the thought that the neutral switch could stay showing neutral when in second. My suggestion was to force the neutral map by jumpering the clutch switch as a test. If you jumper the clutch switch, then all gears would use the same neutral map, and you would see whatever effect that...
  10. J

    I cannot figure this out! Huge power dip.

    It has a neutral sensor. You could jumper the clutch switch to force the neutral map. If it's that map, then all gears would have the problem. But the tuner can change the neutral map, too.
  11. J

    I cannot figure this out! Huge power dip.

    A flash could easily cause just about any engine performance abnormality. Without knowing what changes from stock were made, it is pretty much impossible to make any judgements. But am unusual problem that only shows up in one gear, at a particular narrow rpm range and throttle combination, on...
  12. J

    ECU Flash

    The FlashTune software that Anthony uses (I think he still uses that) doesn't have any provision for disabling the O2 sensors for the S10. They do for certain other bikes. It takes time for a tech at FlashTune to figure out how to disable them, and the S10 isn't a very big market for them. We're...
  13. J

    2012 Tenere

    Flashtune provides stock maps and "unrestricted" maps that you can use as a starting point. The unrestricted maps just remove the throttle restrictions, and don't do any fueling changes. Tuning beyond that is up to you. If you are willing to experiment a bit, and you understand the risks of...
  14. J

    ECU Flash

    The ECU uses a Manifold Absolute Pressure sensor to calculate the mass flow of air. That is used along with the table values in the fuel maps to determine how much fuel to inject. This compensates for elevation changes.
  15. J

    ECU Flash

    The O2 sensor feedback only applies in closed loop engine operation. That includes idle, light acceleration, steady speed cruise, and deceleration. High throttle acceleration moves you out of closed loop operation. So you can re-map for higher output at high throttle situations, and still have...
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