Power Vision Information Thread
#6341
Red,
One last thought, you said you VDC are in the .70 - .95 range? If so, does your lambda correlate with the chart above. This would mean your lambda readings would be below 7.XXX??? The good thing is you said when you power off your O2's drift up to 5VDC which is good means they are 0-5VDC so we have the right overall scale.
This is how S#it usually works, swap everything, pull hair out, mess with settings,,pull hair out,, switch back everything,,, pull hair out,,, mess with more settings,,,, pull remaining hair out................ F#@ck bad sensor!
One last thought, you said you VDC are in the .70 - .95 range? If so, does your lambda correlate with the chart above. This would mean your lambda readings would be below 7.XXX??? The good thing is you said when you power off your O2's drift up to 5VDC which is good means they are 0-5VDC so we have the right overall scale.
This is how S#it usually works, swap everything, pull hair out, mess with settings,,pull hair out,, switch back everything,,, pull hair out,,, mess with more settings,,,, pull remaining hair out................ F#@ck bad sensor!
I just did a test at idle and once it was all warmed up and stabilized, with lambda set at 0.952 both O2 sensors were reading 0.86 volts. According to your table, they should be reading about 2.8 volts, of course that's assuming the VE tables are even close to accurate, which i'm quite confident that at idle they are. Maybe that table isn't accurate for these new small sensors. But I haven't been able to find any info on the internet for the voltage correlation for these sensors.
What concerns me is that if the sensors are bad, why would they both be inaccurate by about the same amount? I'm gonna be pissed if I spend $100 on new sensors and they read the same.
#6342
Ok well given your numbers I know mine are ****ed for sure. Like I said, mine have never read above 1 volt except when the engine is off, and my lambdas are similar to yours. Also, on hard decel where I have added a ton of fuel to keep the pops down both O2s drop to 0 volts.
I'm gonna buy new sensors from my local dealer for $50 each and go from there.
I'm gonna buy new sensors from my local dealer for $50 each and go from there.
My computer has been offline since it got a virus, So just for the hell of it I'm trying to post a screenshot of my AFR table taken with my phone.
It worked
#6343
#6344
Wow, that is great info, TYVM fullautomike, looks like the PV can do a good tune,and as stailjim suspected the 95-100 MAP KPh columns are a bit out of reach for AT.Of course there's nothing better than a good Dyno tune by a qualified operator. But for those of us for whatever reasons don't we can have confidence in what we get out of the PV.
#6346
Mike:
That's some great data. But what is your setup and where did you get the base tune before the dyno adjustments? The shape of your tables are quite different from mine, so I'm just wondering what intake and exhaust you have.
Smokey:
Your AFR table clearly has a lot of smoothing...much more so than what comes from FM or DJ. Also you have a really small closed loop area, which probably makes sense. I see that this is your hot weather table, so I'm guessing your cold weather one has more closed areas? Check out mine...it is all open loop though and it's what I'm currently running while I can't trust my O2 sensors. I have a closed loop one just like it except that all the 0.952 cells are 0.973
That's some great data. But what is your setup and where did you get the base tune before the dyno adjustments? The shape of your tables are quite different from mine, so I'm just wondering what intake and exhaust you have.
Smokey:
Your AFR table clearly has a lot of smoothing...much more so than what comes from FM or DJ. Also you have a really small closed loop area, which probably makes sense. I see that this is your hot weather table, so I'm guessing your cold weather one has more closed areas? Check out mine...it is all open loop though and it's what I'm currently running while I can't trust my O2 sensors. I have a closed loop one just like it except that all the 0.952 cells are 0.973
#6347
Yea I have too much time on my hands. I used the highs and lows from both FM and DJ tables. Then manually tweaked it .001 at a time, Once I got started couldn't stop till it flowed smoothly from one cell to the next (OCD lol). My regular table works 8 months of the year down here, The top of the bulge shifts a little lower and to the right.
Last edited by Smokey Stover; 07-30-2014 at 09:00 AM.
#6349
Red Dragons, I went with everything from Fuel Moto. FM high flow A/C, FM 2-1-2 head pipe, Jackpot 3.5" slash up's, Wood's TW-222 (F'n love them!) Woods directional lifters, and FM pushrods. I did all the work myself. The base map was from FM. Bike is running great!
#6350
I'll play around with the gauges later today, but I do usually keep Lambda on one of them.
One thing about that table you posted...if that's right then my O2 sensors are beyond ****ed because they have NEVER showed a voltage above 1V with the engine running. Once the engine is shut off, the voltages slowly rise up to 5V, but when running the voltage ranges for both sensors are typically 0.95 - 0.70 This error would make the engine(and PV) think it's running super rich, and would cause the AT results I'm getting.
One thing about that table you posted...if that's right then my O2 sensors are beyond ****ed because they have NEVER showed a voltage above 1V with the engine running. Once the engine is shut off, the voltages slowly rise up to 5V, but when running the voltage ranges for both sensors are typically 0.95 - 0.70 This error would make the engine(and PV) think it's running super rich, and would cause the AT results I'm getting.
You might want to do a couple AT runs with your lambda at 1.00 before. If it's as rich as you think the sensors will never read correctly, and the test probably won't yield good results.
Last edited by stailjim61; 07-30-2014 at 11:23 PM.