| Author | Message | ||
     Portero72 |
My EBR ECM seemed to be experiencing a degradation in performance, but it was so gradual, it was hard to tell. Under heavy throttle, between 3500-5000 RPMs, there is noticeable surging and a lack of power compared to the rest of the RPM range. It is apparent when passing on the freeway or when accelerating from low speeds. A switch back to my factory ECM confirmed my suspicions, as the performance was markedly better with the stock unit-opposite what I remember after purchasing the EBR item. I shot EBR an email to see if I can get a reflash or need a new unit-I MAY have purchased an early iteration. They have been great in the past, I would expect nothing different this time. I seem to recall someone on here having a similar issue a while back? If so, I would love to hear how it worked out. Also took the time to relocate that bad boy...just because. | ||
| Towpro |
I know in the 06/07 ECM's they "learn" the bike. The O2 sensor monitors what comes out the pipe, and adjust the maps to make this meet an EPA standard. Now in the race ECM, I bet it still adjust the maps, but maybe not to EPA standards  This adjustment is averaged out and remembered by the ECM. I can't remember the name of this setting (AF?), but you can set it back to 0 (actually 100%) with ECM spy. this is used for altitude adjustment, ect. | ||
| Ratbuell |
It's called AFV, or Air Fuel Value. It should be reset with the TPS, as it is a learned value. If you're experiencing degradation with time, it may indicate another issue somewhere. | ||
| Towpro |
Other issues somewhere else, that is making the ECM change the AFV. Resetting the AFV would make it feel better, but you need to find what is causing the AFV to change. If we are correct, your stock ECM will do the same thing before long. | ||
| Jcbikes |
O2 sensor might be the problem. Overtime, they deteriorate in performance. I replaced mine and its like a new bike. It would not let the AFV go back to 100%. | ||
| Portero72 |
My O2 sensor was replaced earlier this year, so I am reasonably confident that is not the issue. Also, the bike is an 09, so I am not sure if ECMSPY will work with it, nor would I know how to go about doing adjustments with it. I am gonna keep the stock ECM in and see how things go, as I only have about 50 miles on it since the switch. For now, I am really enjoying the rediscovered power the stocker provides. Odd to say that... | ||
| Ratbuell |
Just because an O2 sensor is new, doesn't make it "good". I've had 'em get roached in my turbo cars just from antiseize getting on the sensor head during install. Get more information before you start throwing parts and money at it. | ||
| D_adams |
Adaptive Fuel Value. Btw, you can disconnect the O2 sensors temporarily and it won't do anything other than run on the base map, which should be pretty good. Try it before you send anything anywhere. | ||
| Ratbuell |
Adaptive. That's the word I knew I couldn't remember | ||
| Uly_man |
"I've had 'em get roached in my turbo cars just from antiseize getting on the sensor head during install." Yes contamination of the sensor can make it give bad numbers. Bad numbers can also come from bad joints and bad Grounds. I have had it on both my Ulys. A bad Ground and a bad O2 sensor. "I am not sure if ECMSPY will work with it, nor would I know how to go about doing adjustments with it." It will if you have the right version for your normal ECM. "For now, I am really enjoying the rediscovered power the stocker provides. Odd to say that." I do not think that it is so odd myself. Whats so wrong with the std ECM? Both my Ulys had very linear outputs and no flat spots at all. In fact the only thing I worry about is keeping the front end down and the Law because of the speed I do on the thing. The low to mid range fueling needs adjustment, via a map change or a fueler for a can and air filter change. Top end seems to be about the same either way you just might get there quicker. Its not a race bike though? |
