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Author Topic: Logging Zeitronix AFR with ME7L  (Read 82043 times)
phila_dot
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« on: April 21, 2013, 07:23:24 PM »

-No more splicing RPM and TPS inputs for Zeitronix ZT-2
-Save money and buy ZT-3 instead
-No more syncing ZDL logs with ME7L logs

If your rear O2's are properly deleted, just connect the white wire (linear wideband out) from your ZT-2/3 to the signal for your rear O2.

The narrowband sensors have four wires, 1 signal wire (black), 1 ground (grey), and two heater wires (white). At the plug, the signal wire is the one seperated from the rest. I recommend splicing into an old O2 sensor and not cutting into the ECU harness. The ECU side is female, so I just pushed the wire in for testing purposes, but I plan on hacking up an old O2 sensor for a better connection.

You can use either banks input (or both if you run dual widebands) using the following:

Bank 1 (green):
Address : 0x381116

Bank 2 (brown):
Address : 0x381114

To log voltage:
Factor : 0.004883

To log AFR:
Factor : 0.009766
Offset : -9.6

To log Lambda :
Factor : 0.000664354
Offset : -0.653

A linear wideband output is required for this to work without custom ECU code.

Edit: if it wasn't obvious, these are both word variables

Edit: B5 S4 M/L box content

Edit: Added lambda conversion
« Last Edit: April 24, 2013, 07:59:40 PM by phila_dot » Logged
maZer.GTi
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« Reply #1 on: April 22, 2013, 08:13:09 AM »

-No more splicing RPM and TPS inputs for Zeitronix ZT-2
-Save money and buy ZT-3 instead
-No more syncing ZDL logs with ME7L logs

If your rear O2's are properly deleted, just connect the white wire (linear wideband out) from your ZT-2/3 to the signal for your rear O2.

The narrowband sensors have four wires, 1 signal wire (black), 1 ground (grey), and two heater wires (white). At the plug, the signal wire is the one seperated from the rest. I recommend splicing into an old O2 sensor and not cutting into the ECU harness. The ECU side is female, so I just pushed the wire in for testing purposes, but I plan on hacking up an old O2 sensor for a better connection.

You can use either banks input (or both if you run dual widebands) using the following:

Bank 1 (green):
Address : 0x381116

Bank 2 (brown):
Address : 0x381114

To log voltage:
Factor : 0.004883

To log AFR:
Factor : 0.009766
Offset : -9.6

I prefer lambda, but the conversion would have to be done seperately.

A linear wideband output is required for this to work without custom ECU code.

Edit: if it wasn't obvious, these are both word variables

Edit: B5 S4 M/L box content


Very nice.
Do you think the same will work with the spartan controller from 14point7 ?
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phila_dot
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« Reply #2 on: April 22, 2013, 08:28:49 AM »

Yup, it has a 0-5v linear output.

The conversion to voltage will be the same, but converting voltage to AFR will need to be tweaked.

Also, if the ECU is not a B5 S4 M or L box, then you will have to locate the RAM addreses for uushk_w and/or uushk2_w.

Edit: it looks like the conversion for the spartan is as follows:

AFR:
Factor : 0.00976
Offset : -10

Lambda:
Factor : 0.000664354
Offset : -0.68
« Last Edit: April 24, 2013, 08:13:38 AM by phila_dot » Logged
nyet
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« Reply #3 on: April 22, 2013, 09:06:27 AM »

AWESOME info. Thank you.

Phila: have you looked over the rear O2 delete instructions in the s4 wiki?

Are they sufficient? I do not want strange O2 or calc EGT side effects if i feed a w/b signal there.
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phila_dot
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« Reply #4 on: April 22, 2013, 11:48:53 AM »

AWESOME info. Thank you.

Phila: have you looked over the rear O2 delete instructions in the s4 wiki?

Are they sufficient? I do not want strange O2 or calc EGT side effects if i feed a w/b signal there.

It could be cleaned up a little bit, but, going from memory, it looks complete.

If CWKONLS is set to 17, then there really isn't any conflict. Voltage and resistance will be zero regardless of sensor readings.
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nyet
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« Reply #5 on: April 22, 2013, 12:07:26 PM »

Can you think of a more minimal solution? I.e. wideband + heater controller and thats it?

can ME7's heater control be used with a wideband, or is that incompatible with the O2 delete?

would be really nice just to have a dual wideband setup in the stock location w/o all the zt circuitry.
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Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your experience.
s5fourdoor
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« Reply #6 on: April 22, 2013, 12:38:45 PM »

Can you think of a more minimal solution? I.e. wideband + heater controller and thats it?

can ME7's heater control be used with a wideband, or is that incompatible with the O2 delete?

would be really nice just to have a dual wideband setup in the stock location w/o all the zt circuitry.

i like where you are going with this!
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catbed
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« Reply #7 on: April 22, 2013, 07:07:09 PM »

I see no reason why this won't work with AEM as well? It has the necessary 0-5v output.
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phila_dot
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« Reply #8 on: April 22, 2013, 07:32:38 PM »

Can you think of a more minimal solution? I.e. wideband + heater controller and thats it?

can ME7's heater control be used with a wideband, or is that incompatible with the O2 delete?

would be really nice just to have a dual wideband setup in the stock location w/o all the zt circuitry.

The ECU doesn't have the hardware to actually control the wideband sensor. It is not capable of the controlling the pump cell. I believe that the heating logic is different as well.

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phila_dot
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« Reply #9 on: April 22, 2013, 07:35:26 PM »

I see no reason why this won't work with AEM as well? It has the necessary 0-5v output.

As long as it is a linear output.

Analog output will require extra logic.
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nyet
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« Reply #10 on: April 22, 2013, 07:36:31 PM »

So maybe stereo LC-1 would be the cheapest barebones install?
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ME7.1 tuning guide (READ FIRST)
ECUx Plot
ME7Sum checksum checker/corrrector for ME7.x

Please do not ask me for tunes. I'm here to help people make their own.

Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your experience.
phila_dot
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« Reply #11 on: April 22, 2013, 07:48:31 PM »

So maybe stereo LC-1 would be the cheapest barebones install?

14point7 Spartan is $105
Zeitronix ZT-3 $169 or $199 w/gauge
Innovate LC-1 $199 w/o gauge
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phila_dot
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« Reply #12 on: April 24, 2013, 08:00:10 PM »

Lambda conversion corrected and confirmed
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britishturbo
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« Reply #13 on: April 25, 2013, 12:04:30 PM »

I actually wired up my LC-1 2nd output to one of my rear o2 sensors for this very reason lol.
But with the Innovate you can use Jasons ME7 Logger to log both together... but I like this, less work!

Good job.
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nyet
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« Reply #14 on: April 25, 2013, 12:36:25 PM »

14point7 Spartan is $105
Zeitronix ZT-3 $169 or $199 w/gauge
Innovate LC-1 $199 w/o gauge


got it. looks like im going to get dual spartans.
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ME7.1 tuning guide (READ FIRST)
ECUx Plot
ME7Sum checksum checker/corrrector for ME7.x

Please do not ask me for tunes. I'm here to help people make their own.

Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your experience.
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