Re: LogBox + InnovateMTX-L(digtal AFR gauge)measuring differ |
Ok, thank you!
I understand it is best to leave default. |
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Re: LogBox + InnovateMTX-L(digtal AFR gauge)measuring differ |
Maximum % Change: this is the maximum percentage change the autotune can make to a cell in one autotune session, i would leave this at 10%
AutoTune Strength: this is a global control of how much change will be made to the fuel map in an autotune session, i suggest you start at 100% for the first few autotune sessions, then reduce the AutoTune strength back down to 30-40 as you map converges on the Target AFR, this will allow smaller changes to the fuel maps for fine tuning when it is close.
Map Pre Smoothing: This option smooths the fuel map before applying the main map smooth function, i recommend you leave this enabled
Map Smoothing: This option controls how much map smoothing is done, 0 is no smoothing, 9 is full smoothing. I suggest you leave this at 9 as it generally gives the best results. |
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Re: LogBox + InnovateMTX-L(digtal AFR gauge)measuring differ |
Hello Justin!
Could you tell me please what are the best settings for tuning here:
Thanks in advance! |
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Re: LogBox + InnovateMTX-L(digtal AFR gauge)measuring differ |
Thank you very much for your support and advice! |
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Re: LogBox + InnovateMTX-L(digtal AFR gauge)measuring differ |
Yes i agree with John, but feel free to adjust it until its just right, but dont chase your tail on it too much |
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Re: LogBox + InnovateMTX-L(digtal AFR gauge)measuring differ |
I'd say you are good to go TNG. That amount of variance is well within the limits of any tuning changes you should be making anyway. |
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Re: LogBox + InnovateMTX-L(digtal AFR gauge)measuring differ |
Thanks Justin for the quick response!
With these settings:
0V = 7.00
5v = 22.00
Looks like we're on the right track.
Engine data is slightly different. |
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Re: LogBox + InnovateMTX-L(digtal AFR gauge)measuring differ |
Ok the analogue output looks to be reading a little bit high when compared to the digital gauge. the correction calculation is pretty straight forward.
As it is now
7.35 + (1.561/5) * (22.39-7.35) = 12.04 AFR
to get the correct AFR in WRT
7.1 + (1.561/5) * (22.14 - 7.1) = 11.79 AFR
So use the following wideband o2 settings
0v = 7.1
5v = 22.14
test these settings and you may need to scale it down a little more if it is still on the high side
e.g.
0v = 7.00
5v = 22.00 |
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Re: LogBox + InnovateMTX-L(digtal AFR gauge)measuring differ |
wow, that is some difference, it could be a problem with the D/A convertor on the MTX gauge? Can you measure the voltage on the analog out from the gauge when the AFR is steady on the gauge, and post up the voltage and the AFR reading. This will tell us if the voltage being output by the gauge is off.
I measured the voltage at pin 12 but I do not understand anything!
Look .. |
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Re: LogBox + InnovateMTX-L(digtal AFR gauge)measuring differ |
wow, that is some difference, it could be a problem with the D/A convertor on the MTX gauge? Can you measure the voltage on the analog out from the gauge when the AFR is steady on the gauge, and post up the voltage and the AFR reading. This will tell us if the voltage being output by the gauge is off. |
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Re: LogBox + InnovateMTX-L(digtal AFR gauge)measuring differ |
A friend of mine has the same issue,with the same wideband controller and with the exact same offset... He is not using a display,he is just logging with analog output when the enginedata shows 13.0 he is actually at 14.0.
I'll let you know if we come up with a solution. |
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Re: LogBox + InnovateMTX-L(digtal AFR gauge)measuring differ |
ok so I've shortened the wire from the gauge to the ECU. It was short, but anyway..
Everything's in place.
I have attached 2 photos with the settings from the mtx and the logbox, and a link with a movie, to see the difference.
http://V2CLD.com/kh3hfu
the same movie but on another site
http://tinypic.com/r/bdo7y0/5 |
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Re: LogBox + InnovateMTX-L(digtal AFR gauge)measuring differ |
Just a couple of things to check:
Have you entered the correct settings for 0v and 5v AFR in the settings page?
Have you configured the analog output from the MTX gauge to ensure that it is outputting wideband AFR (i.e. not narrowband simulation)
The difference could be due to a voltage drop from the gauge to the ECU pin, how far is the run of wire?
Please check the above, you may need to adjust the wideband 0v and 5v settings to get correct values before you use AutoTune. |
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Re: LogBox + InnovateMTX-L(digtal AFR gauge)measuring differ |
What do you mean by average AFR?
The setup/setting for AFR/volt-range (0-5v) in Autotune/Wideband is the same as for your MTX-L WB-controller.
You will have to simultaneously check the output (gauge) with the Live data (engine data) view to check for any differences.
Or simultaneosuly produce a logfile from Logbox/Innovate software. And compare the readings.
There should not be any differences between the readings if the software and the connections (resistance/earth) is OK.
The difference between 13,7 to 14,7 AFR is 9,3% (not 1%), and would give totally wrong results when trying to use Autotune.
This is a interesting subject though, as I have seen that an AFR-reading from a tuners dynojet(WinPEP) may differ from the readings from the Logbox. |
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LogBox + InnovateMTX-L(digtal AFR gauge)measuring difference |
Hi there!
I have an issue with the LogBox and the Innovate MTX-L AFR gauge.
For example: Live Data from Woolich Racing software shows an average of ~14.7 and the MTX-L gauge shows ~13.7. So practically there's 1 AFR pct. difference.
The MTX-L is calibrated.
Where's the difference coming from? It's a software bug? Which shows the right value?
Has anyone been dealing with this problem?
AND: can I use the Autotune feature in the conditions mentioned above?
Thank you! |
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