Another question: Can I use the simulated NB signal from a Zeitronix WB controller to feed the Motronic? Instead of stock NB?
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Simulated Narrowband into motronic
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Originally posted by ChrisAudi80Another question: Can I use the simulated NB signal from a Zeitronix WB controller to feed the Motronic? Instead of stock NB?
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Originally posted by filip.krticka View PostThanks prj for big contribution and knowladge share to the community
Could anybody share the RS2+ map based on the prj research please? Do not want to reinvent the wheel. Thanks a lot. I do not actually car if it is for gasoline or E85.
Originally posted by ChrisAudi80 View PostAnother question: Can I use the simulated NB signal from a Zeitronix WB controller to feed the Motronic? Instead of stock NB?
I also had another idea about creating a patch to run 1.8T IAT sensor over the OEM one. OEM one is a little harder to find in the USA and 1.8T ones are everywhere. what made me realize this is i took the stock IAT sensor out of my car and installed a 1.8T one with the VEMS and i just realized that it was in there still because of the high readings the logging is showing. also i have no idea where i put my original sensor and dont want to track down or buy another one lol. by the looks of it the 1.8T sensors scale is exactly opposite to the original sensor.
Last edited by vwnut8392; 1 January 2018, 02:14."The really good drivers got the bugs on the side windows." Walter Röhrl
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Originally posted by vwnut8392 View Post
i would say the purpose of PRJmod is to create your own tuning. if you are not capable of doing it im sure that PRJ will provide you with the tuning your after for a fee.
Yes it is possible to feed the 0-5V signal directly from any wideband controller into the motronic on one of the analog inputs. i am working on a solution for this but will use the MFTS pin 46 for now so if wideband input is needed map switching or the boost cut patches should not be enabled.
I also had another idea about creating a patch to run 1.8T IAT sensor over the OEM one. OEM one is a little harder to find in the USA and 1.8T ones are everywhere. what made me realize this is i took the stock IAT sensor out of my car and installed a 1.8T one with the VEMS and i just realized that it was in there still because of the high readings the logging is showing. also i have no idea where i put my original sensor and dont want to track down or buy another one lol. by the looks of it the 1.8T sensors scale is exactly opposite to the original sensor.
Stock AAN and 1.8T IAT sensor are both NTC IIRC. However, the 1.8 is supposed to have better resolution and response.'96 UrS6 auto PRJ chipped E85
'95 80Q AEB VEMS E85
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The 2.2T sensor is PTC. The resolution/response is not any better, this is a misguided assumption by the people running VEMS as VEMS lacks the hardware to correctly read the PTC sensor.
Also, all the sensors have calibration curves in the ECU, nothing to do other than change a map.
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Originally posted by prj View PostThe 2.2T sensor is PTC. The resolution/response is not any better, this is a misguided assumption by the people running VEMS as VEMS lacks the hardware to correctly read the PTC sensor.
Also, all the sensors have calibration curves in the ECU, nothing to do other than change a map.
Originally posted by ChrisAudi80 View Post
I meant just inputting the simulated NB (0-1v) to the signal in pin on stock ECU.Last edited by vwnut8392; 2 January 2018, 01:07."The really good drivers got the bugs on the side windows." Walter Röhrl
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A wideband feed into the motronic and using of this signal for the fuel injection would be make a lot of things possible, but I could image that a lot of other things are more important.
@vwnut: Read the Volvo motronic "monster" thread, as far as I remember they modified the motronic code for wideband signals.
Sensor map you will find in the source code... BExx.
I guess after 5 years of "working" at the motronic you can find this alone.
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0-1V feed into Motronic - it should be OK, because prjmod binary has the Lambda reading delay patch in it. Meaning i hardcoded a delay from start for which lambda is not used regardless of what the ECU thinks about the status. It monitors the lambda behavior and when it heats up, starts using it instantly, but for a simulated 0-1V input usually it stays at a fixed value while the wbo2 is heating, and it's not the fixed value the ECU expects, so it instantly thinks signal is good and you get 25% fuel trim etc. That is what my patch solves.Last edited by prj; 9 January 2018, 19:12.
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PRJ, what does the signal from a real NBO2 sensor look like during heat-up?When trouble arises and things look bad, there is always one individual who perceives a solution and is willing to take command. Very often, that individual is crazy. - Dave Berry
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Originally posted by bmwman91 View PostPRJ, what does the signal from a real NBO2 sensor look like during heat-up?
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A little internet research:
"As I just discussed, the computer supplies a bias voltage signal to the O2 sensor any time the key is on. This is done so the computer can monitor if the O2 sensor is warm enough to start operating. As mentioned before, a cold O2 sensor outputs no voltage signal. And as the sensor warms up, it starts producing enough voltage to either pull up or pull down the computer-supplied bias voltage."
http://www.gmtuners.com/tech/O2.htm
This would explain the multiple analog pins on S600 which are used in the O2 sensor circuit. I will do some oscilloscope captures of the inputs and intermediate signals to see what is up.
I think that a lot of WBO2 controllers with simulated NB output have (or claim to) a high impedance output state during sensor warm up. If that is the case, then I would think that Motronic would be OK as its pull-up/down circuit should do its job. Innovate Motorsport claims that its LC-x controllers are high impedance during warm-up, and I contacted Alan To of 14point7 to confirm that he also does this in his products (which I currently use).When trouble arises and things look bad, there is always one individual who perceives a solution and is willing to take command. Very often, that individual is crazy. - Dave Berry
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I am saying as a fact without the patch trim gets instantly enabled with 14point7 narrowband signal and ecu goes to +25% fuel fast.
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Originally posted by prj View PostI am saying as a fact without the patch trim gets instantly enabled with 14point7 narrowband signal and ecu goes to +25% fuel fast.
Do you have the Bosch or Audi PN for the 2.3.2 DME? I would like to see if I can find one on eBay so that I can do some work in parallel with the same system as people here (since so much of it is the same / similar to M1.7).When trouble arises and things look bad, there is always one individual who perceives a solution and is willing to take command. Very often, that individual is crazy. - Dave Berry
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