| Author | Message | ||
     X1_rider |
I managed to eliminate the sputtering and excessive lowering of AFV causing a lean condition on my 2002 X1W with Force exhaust by turning the O2 sensor off using ECM Spy. The bike runs great but the plugs indicate that it may be a little bit rich. Could I manually lower the AFV to 97-99% with ECM Spy (and monitor the plugs of course) to lean the mixture out a little? Since the O2 sensor is turned off, the AFV would stay at the value I set it at. Has anyone ever tried something like this? Thanks for any input. | ||
| Slayer5690 |
My 2000 X1 has a the same problem and the same question. also is it even safe to turn of the O2 sensor indefinitely? | ||
| X1_rider |
As far as I know, the O2 sensor is basically to re-adjust the tune according to some variations. When it is off, I guess the bike just runs off the map. I know when my sensor was on, the bike would immediately start leaning itself out, sputtering, spitting through the intake and my plugs would get white. I'd rather have a slightly rich condition then a very lean one. Maybe someone with more expertise then myself will chime in on the O2 sensor being turned off subject, I'm interested to know as well. | ||
| Froggy |
You can re-enable the O2 sensor, and change the minimum and maximum AFV. Set the minimum to 90 and see what happens. | ||
| Snowbees |
I would do some dataloging, run the logs through mealog viewer to get your maps adjusted to your setup. the ecm sets the afv via running conditions in the closed loop area of your maps, the rest of your maps may be lean,rich or ok , I recently started doing the same on my x1, i now have a stable afv of 100% and good air/fuel ratio across my whole map. Once started you'll find its adictive trying to get the perfect map. Have you read the tunning guide at www.ecmspy.com | ||
| X1_rider |
Snowbees, what is your setup (intake, exhaust, ecm)? I contacted Mike Cobb from xopti and he recommended logging with TunerPro RT, I just didn't get around to it yet. I tried lowering my AFV yesterday, I'll check the plugs this morning. | ||
| X1_rider |
Well, just checked my plugs, with the AFV locked at 99%, they are white. I'll just keep the O2 sensor disconnected, locking AFV at 100% until I have time to deal with this. | ||
| Slayer5690 |
The problem I run into when data logging is when the VE analyzer adjusts my maps but my bike runs worse. more sputtering and backfiring than before | ||
| Snowbees |
X1-rider, i have standard ecm with race maps, or what were race maps before i altered them,(not touched my timing maps, they are standard race ones) Buell Race exhaust, and a foam high flow mushroom air filter clamped to the intake. with the race maps it was running with an afv of 110%(lean) now it runs like a scolded cat with 100% afv, no poping etc, The only area kept as standard race map numbers are the idle cells. | ||
| X1_rider |
I think the problem is my Force exhaust, with the Race ECM it would sputter and spit from 2500 to 3500 RPM and the tune would lean itself out to the point of not running well at all and snow white spark plugs (I've hit AFV down to the 60's). With the O2 sensor disconnected, it runs well and is a bit rich even. What I need is a good dyno tuner to adjust the map for the Force exhaust's properties. |
