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Type: Posts; User: upaero

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    Is it coughing through the intake? That's a sign...

    Is it coughing through the intake? That's a sign of a lean condition. If you have an intake leak the ECM should compensate for it with factory settings. Step 1 is to check your AFV and then act...
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    The main reason is that it was never for sale.

    The main reason is that it was never for sale.
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    Actually, in open loop the ECM will not correct...

    Actually, in open loop the ECM will not correct for a lean or rich condition. However, the O2 sensor can still be active to inform you about sensed lean condition with a CEL. That way you can do...
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    Why tune to 14.7 to accommodate a narrow band O2...

    Why tune to 14.7 to accommodate a narrow band O2 sensor? It will run cooler and have better throttle response at about 14.2. Plus, those sensors are not the most trust worthy. I only keep the O2...
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    Instead of running CL for economy, I suggest...

    Instead of running CL for economy, I suggest changing your AFR targets in the cruise range to about 14.2. If you run CL you run the risk of the ECM leaning everything out.
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    The FP10153 regulator you listed is the same as...

    The FP10153 regulator you listed is the same as stock. If you want 58 PSI (4 bar) the Walbro 135-22 is an option.
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    If you have a damaged ECM (common with Ulys) you...

    If you have a damaged ECM (common with Ulys) you can expect a laundry list of stored codes. You can either fire the parts cannon at it or do some simple diagnostics to see if you have low fuel...
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    Technically you can, but your pump is already...

    Technically you can, but your pump is already regulated by a mechanical fuel pressure regulator so the sensor data would only be good to look at. Adding another O2 sensor does nothing for you...
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    The first step is always to check the AFV to see...

    The first step is always to check the AFV to see what the ECM has adjusted itself to, then act accordingly. It's probably running lean like most Buells. Don't change any parts until you've done...
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    The injector service I do includes ultrasonic...

    The injector service I do includes ultrasonic cleaning, back flushing, leak check, and flow measurement. If there is a difference in flow rate (very common) the injectors can't be adjusted but you...
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    How to diagnose most Buell EFI problems

    I have added this section below to the troubleshooting page at rev-mo.com/efitroubleshoot. Instead of randomly replacing parts based on a hunch or something you read online you can actually see what...
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    You could have a good pump, but a bad seal...

    You could have a good pump, but a bad seal causing internal leakage. Check your pressure. rev-mo.com/fuel.
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    That almost always means the ECM is trying to...

    That almost always means the ECM is trying to compensate for low fuel pressure. rev-mo.com/fuel.
  14. Llama, you are close to sea level correct? Since...

    Llama, you are close to sea level correct? Since I started requiring people include their AFV with requests for tune files I have found that a vast majority of bikes are in the 85-90% AFV range at...
  15. Thread: Ecm

    by upaero
    Replies
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    1,229

    If your ECM had the "Uly" problem you would see a...

    If your ECM had the "Uly" problem you would see a laundry list of stored faults. Check your AFV which will tell you if the ECM has been compensating for low fuel pressure.
  16. Thread: Ecm

    by upaero
    Replies
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    1,229

    Before changing an ECM or any other part you...

    Before changing an ECM or any other part you really should do some simple diagnostics using a Buelltooth and Ecmdroid. If you do have to replace the ECM you're going to need them anyway to do a TPS...
  17. Thread: 2001 X1 Project

    by upaero
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    2,047

    Iíve posted the pulley and belt combination you...

    Iíve posted the pulley and belt combination you need twice now. You can lead a horse to water...
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    You did NOT read on the Buelltooth site that a...

    You did NOT read on the Buelltooth site that a mechanical problem can be remedied with a "map". On the contrary actually.
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    The air temp sensor and fuel pump codes are...

    The air temp sensor and fuel pump codes are remnants of having the bike turned on while those were disconnected, so you can disregard. The AMC error mask should already have been unchecked, but...
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    Yes you should be fine as long as the AFV doesn't...

    Yes you should be fine as long as the AFV doesn't drop again. Don't be afraid to try open loop with the AFV at about 103. It will help drivability and run cooler with negligible effect on fuel...
  21. [QUOTE=Barrett;626794]the "regularly scheduled...

    [QUOTE=Barrett;626794]the "regularly scheduled thread path" has taken us to this: none of my Buells or any of my three XR1200's have one of these nonsensical QS devices installed. why? because my...
  22. Thread: 2001 X1 Project

    by upaero
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    YES! Stock XB rear pulley, 29T front and a 132T...

    YES! Stock XB rear pulley, 29T front and a 132T belt.
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    Ah, ok. At the ~1100' elevation of Phoenix 83.5...

    Ah, ok. At the ~1100' elevation of Phoenix 83.5 is very low, and explains why your bike was running so bad. It's very common (more often than not I would bet) for these bikes to run unnecessarily...
  24. Blipping the throttle to "RPM match" for...

    Blipping the throttle to "RPM match" for downshifting is perfectly fine, but when upshifting you need a quickshifter if you want to "bang through the gears". Each of my bikes including an HD...
  25. This is not recommended without a quickshifter to...

    This is not recommended without a quickshifter to unload the transmission, which allows the gear change to happen safely and smoothly. Eventually something in the trans is going to give. Of course...
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