how-to: Log AFR from the LC-1 w/o a serial cable
Glad it works!
Feb 14, 2012, 07:58 PM
#437
Help please
Hi guys,
I tried to follow the instructions on page 1, option 2 : modify existing ROM. My problem is that Evoscan LC1Wideband02 logs 7.35 while the LC1 display shows 7.5 constantly while idling. Prior to connecting to the rear 02 blue wire the LC1 displays correctly. Can you please point out what I did wrong?
1. I disconnected the rear o2 connector under the seat. I tapped the brown signal wire to the blue o2 wire by the tranny tunnel
2. I did the rear 02 sim, RAM address, MUT12 changes (please see the attachment
3. I did not modify Evoscan 2.9 LC1Wideband02 because it already has a formula in it
Thanks for your help
I tried to follow the instructions on page 1, option 2 : modify existing ROM. My problem is that Evoscan LC1Wideband02 logs 7.35 while the LC1 display shows 7.5 constantly while idling. Prior to connecting to the rear 02 blue wire the LC1 displays correctly. Can you please point out what I did wrong?
1. I disconnected the rear o2 connector under the seat. I tapped the brown signal wire to the blue o2 wire by the tranny tunnel
2. I did the rear 02 sim, RAM address, MUT12 changes (please see the attachment
3. I did not modify Evoscan 2.9 LC1Wideband02 because it already has a formula in it
Thanks for your help
May 12, 2012, 08:59 AM
#440
Evolved Member
Just posting this in case someone needs it. Its how to setup the zeitronix ZT-2 and log with evoscan with a 3 plug JDM ecu.
On the zeitronix ZT-2 control box, locate the all white wire, on post 2010 versions this is the linear analogue 0-5v output (check your manual to confirm).
Connect this to a spare ADC input of the ecu (I used pin 93 since I was already using pin 92 for my MAP sensor).
If you use pin 93, the MUT address to log is 39 (enter this as request 39 in evoscan)
Now the perhaps not so obvious bit. Evoscan comes with an item called ZTX Wideband. In the 'evaluation' field when you edit the xml, there is already a formula. This is not what you need and it needs to be changed. To make a new formula, you need to know the AFR range of the sensor, which if you read from Zeitronix's website says its 9.5 - 21 AFR. Again, not quite right, if you use this as your range to make the formula it will read about a full point lean.
The correct range to use comes from the "for use with 3rd party systems" specs. Min AFR = 9.6 / Max AFR = 19.6
Using that we get 0.0392157*x+9.6 as the evaluation formula. You need to also change max and min graph and gauge values to min=0, max = 21.
I you want the quick way & youre using pin 93, copy this text into your evoscan xml for the ZTX Wideband item:
Ive logged it against the serial output and its identical across the range.
Enjoy
On the zeitronix ZT-2 control box, locate the all white wire, on post 2010 versions this is the linear analogue 0-5v output (check your manual to confirm).
Connect this to a spare ADC input of the ecu (I used pin 93 since I was already using pin 92 for my MAP sensor).
If you use pin 93, the MUT address to log is 39 (enter this as request 39 in evoscan)
Now the perhaps not so obvious bit. Evoscan comes with an item called ZTX Wideband. In the 'evaluation' field when you edit the xml, there is already a formula. This is not what you need and it needs to be changed. To make a new formula, you need to know the AFR range of the sensor, which if you read from Zeitronix's website says its 9.5 - 21 AFR. Again, not quite right, if you use this as your range to make the formula it will read about a full point lean.
The correct range to use comes from the "for use with 3rd party systems" specs. Min AFR = 9.6 / Max AFR = 19.6
Using that we get 0.0392157*x+9.6 as the evaluation formula. You need to also change max and min graph and gauge values to min=0, max = 21.
I you want the quick way & youre using pin 93, copy this text into your evoscan xml for the ZTX Wideband item:
Code:
<DataListItem DataLog="Y" Color="" Display="ZTX Wideband" LogReference="ZTXWB" RequestID="39" Eval="0.0392157*x+9.6" Unit="AFR" MetricEval="" MetricUnit="" ResponseBytes="1" GaugeMin="0" GaugeMax="21" ChartMin="0" ChartMax="21" ScalingFactor="1" Notes="You can wire in an external sensor into your ecu to get this value." Priority="1" Visible="False" />
Ive logged it against the serial output and its identical across the range.
Enjoy
Last edited by EvocentriK; May 12, 2012 at 09:05 AM.
Jul 18, 2012, 11:22 AM
#441
It seems the links to http://www.dsm-ezine.com don't work anymore. 
Oct 1, 2012, 09:27 AM
#443
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Need a little assistance here. I've been logging my AEM Uego through the analog output for a little while now and everything was good...my serial and analog readings closely matched each other using 0.03913*x+9.5
I just made the switch over to SD (88592715) and now the analog reading is way off even when I increased the offset to 0.03913*x+10
The weird thing is that it doesn't seem to be doing much movement, just slowly increasing in value.
I currently have the maf unplugged and removed, is there something in the SD Rom that would cause this? Has anyone else experienced anything like this?
I just made the switch over to SD (88592715) and now the analog reading is way off even when I increased the offset to 0.03913*x+10
The weird thing is that it doesn't seem to be doing much movement, just slowly increasing in value.
I currently have the maf unplugged and removed, is there something in the SD Rom that would cause this? Has anyone else experienced anything like this?
Oct 3, 2012, 01:27 AM
#446
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Location: Washington State
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Just wondering if anyone from the WA area has the Innovate LC-1 and could answer some questions I have.
I just bought my Evo 8 a few months ago. The Air Fuel gauge is not working at all.
I finally started snooping around under the dash and found this system and I have no clue what is going on with it. I would hate to pay someone to start digging around here but this may be my only solution if I don't find someone that is around my area that could help me.
I have looked at the diagrams that are online and found a great one that makes sense to me to trace the wiring. So far everything looks like it is installed as it should be.
My first question is if the oxygen sensor is bad would my gauge not work at all?
I just bought my Evo 8 a few months ago. The Air Fuel gauge is not working at all.
I finally started snooping around under the dash and found this system and I have no clue what is going on with it. I would hate to pay someone to start digging around here but this may be my only solution if I don't find someone that is around my area that could help me.
I have looked at the diagrams that are online and found a great one that makes sense to me to trace the wiring. So far everything looks like it is installed as it should be.
My first question is if the oxygen sensor is bad would my gauge not work at all?
Oct 3, 2012, 01:29 AM
#447
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Join Date: Aug 2012
Location: Washington State
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Just wondering if anyone from the WA area has the Innovate LC-1 and could answer some questions I have.
I just bought my Evo 8 a few months ago. The Air Fuel gauge is not working at all.
I finally started snooping around under the dash and found this system and I have no clue what is going on with it. I would hate to pay someone to start digging around here but this may be my only solution if I don't find someone that is around my area that could help me.
I have looked at the diagrams that are online and found a great one that makes sense to me to trace the wiring. So far everything looks like it is installed as it should be.
My first question is if the oxygen sensor is bad would my gauge not work at all?
I just bought my Evo 8 a few months ago. The Air Fuel gauge is not working at all.
I finally started snooping around under the dash and found this system and I have no clue what is going on with it. I would hate to pay someone to start digging around here but this may be my only solution if I don't find someone that is around my area that could help me.
I have looked at the diagrams that are online and found a great one that makes sense to me to trace the wiring. So far everything looks like it is installed as it should be.
My first question is if the oxygen sensor is bad would my gauge not work at all?
Oh and also I guess the gauge itself could be shot?
Any help would be much appreciated.
Nov 20, 2012, 04:54 PM
#450
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I use the DynoJet Wide Band Commander. Here is the voltage scale from Dynojet. I can't figure out how to work the math for the log to read correctly. Can someone help me out here?
The scale:
The scale: