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Author Topic: Logging Zeitronix AFR with ME7L  (Read 168358 times)
rnagy86
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« Reply #105 on: October 06, 2013, 10:12:42 PM »

I believe my zt-2 is seeing TPS.  Now I'll have to go back and check to make sure it's coming through accurately, but I believe it is.  b5 s4 by the way since you asked. I'm new to all this gadgetry, so take this with a grain of salt haha.  I'm going to try to do this mod next though.  I'll just need to figure out the stuff you guys are doing on the ME7 logger side. 

Yes it a b5 s4. Can you tell me if it is working and to which wire it is connected to because I connected it directly to the TPS wire and it is pegged at 100%.
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ddillenger
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« Reply #106 on: November 11, 2013, 10:16:04 AM »

Locations for the 4Z7907551R:

0x380B28 uuhsk_w
0x380B26 uuhsk2_w

To find the locations in your 2.7 (and many other binaries), hex search for this:

f6 f4 ?? f8 05 8f ?? f8 f3 f8 ?? f8 3d 05 f2 f4 ?? ?? f6 f4 ?? f8 ?e 1? 9a 1? 17 ?0 9a 0?

The offset after F2 F4 is what you want. In the 551R it is 28 8B.

28 8B-->8B 28

(8B28+380000)-8000=Your ram address.

« Last Edit: November 11, 2013, 10:25:46 AM by ddillenger » Logged

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ilyafil
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« Reply #107 on: January 20, 2014, 04:40:05 PM »

Hey, guys. I modified the .cfg and .ecu files accordingly to log my Spartan WB, but now ME7logger isn't working. It says "reading log config fail, exiting..."
Could you check if I messed something up. Here are the files.
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ddillenger
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« Reply #108 on: January 20, 2014, 06:42:40 PM »

Fil, the cfg file all you use is the name of the variable. The rest of the info isn't needed.

Sorry I haven't had a chance to look until now, I've been pretty swamped the past few days.
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ilyafil
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« Reply #109 on: January 20, 2014, 07:15:15 PM »

No worries. I'll change it.
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ilyafil
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« Reply #110 on: January 23, 2014, 02:33:12 PM »

OK. Got it working, but AFR logs look weird, maybe I wired something wrong?
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ilyafil
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« Reply #111 on: January 24, 2014, 07:49:37 AM »

Never mind. I wired it incorrectly...
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srs731
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« Reply #112 on: February 20, 2014, 11:51:46 AM »

Quick question,

Thought I did the values correct, however for the AEM wideband I am getting the wrong numbers in excel. Can anyone verify what I am supposed to have in the .ECU file? Or where I went wrong?

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phila_dot
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« Reply #113 on: February 20, 2014, 06:51:43 PM »

Quick question,

Thought I did the values correct, however for the AEM wideband I am getting the wrong numbers in excel. Can anyone verify what I am supposed to have in the .ECU file? Or where I went wrong?



Replied on AZ
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jibberjive
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« Reply #114 on: March 24, 2014, 08:43:29 PM »

Hey Phila, in your first post summary, you might want to add next to the variable locations and green/brown connector that the variables that we're dealing with are uushk_w
and
uushk2_w

Seems to be the only thing missing from the summary, and that is what people will be looking for in their .cfg and .ecu files.
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julex
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« Reply #115 on: April 03, 2014, 08:16:29 AM »

Now if we could find more unused inputs on our ECU... Smiley. I need to decide (a toggle perhaps?) if I want 2 AFRs vs 1 AFR and Zeitronix boost...
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phila_dot
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« Reply #116 on: April 03, 2014, 08:59:18 AM »

Hey Phila, in your first post summary, you might want to add next to the variable locations and green/brown connector that the variables that we're dealing with are uushk_w
and
uushk2_w

Seems to be the only thing missing from the summary, and that is what people will be looking for in their .cfg and .ecu files.

Like this?

Bank 1 (green):
Address : 0x381116

Bank 2 (brown):
Address : 0x381114

Edit: Nvm, you mean add the variable names.
« Last Edit: April 03, 2014, 09:00:59 AM by phila_dot » Logged
julex
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« Reply #117 on: April 10, 2014, 09:24:25 PM »

Just an FYI about Spartan. It is problematic with ME7.1 for some reason.

Mine measured voltage wise as follows when there was nothing hooked up to it:
no oxygen (sensor in a zip lock bag (watch out it gets hot fast!) with butane torch with open valve, not lit naturally): 0.005V
open air: 5.01V

So it is perfect. Even Zeitronix didn't do as well with 5.05V on high side.

Now the "fun" starts. ECU in disconnected O2 plug state has 0.45V potential on signal wire... no idea why and it is the case on both plugs. Once you connect Spartan to signal wire of ECU, something happens...

The "10.00" AFR (rich, butane gas) that was previously 0.005V reads on voltmeter and in ECU via Me7  Logger as 0.053713V (that's 0.12AFR if you were using 2AFR/V function Spartan is scaled at)
The "20.00" AFR (open air) that was 5.01V reads as 4.424V... So it is only 4.424 * 2 + 10 =  18.848 AFR if you were using default scaling. 18.8AFR reported in logger is a long way off from 20.00...


Zeitronix in the same scenario holds the voltages  regardless of open end or ECU hanging on the other side Angry


So... I mathematically arrived at a function that uses the new limited voltage range and re-scales V/AFR ratio, it should work as it proved to calculate 14.7 AFR voltage level to what I measured via ECU when idling. I will post proper factor and offset in a day or two once I log the car and prove that conversions work right in ME7 Logger.

In retrospect I regret not getting second ZT-2, it is overall better unit IMHO. As is, the spartan logic board is essentially hanging right over the exhaust area as it is incorporated into the O2 WB plug receptacle... The sensor cable is short preventing me from placing the plug part in safe environment. I wonder how long will that live.  ZT uses the same Bosch LSU 4.2 sensor but the sensor plugs into long reinforced extension cable that runs up to dashboard area through ECU box and it is here where all the electronic live. I've had zero issues with zeitronix for last three or so years.

I am perplexed why didn't they simply put the same board on the other side, or made a separate cable with pig tail on it, of cable - it wouldn't be exposed to brutal near exhaust area. The current set up almost forces you to spend extra money for oxygen sensor cable extender, long one at that, you know the one that costs $60 at least.... oh wait, now this whole thing is almost as much as ZT-2 with quite a few features missing from it, it is still a little dumb board without connectivity and ability to be programmed for different narrowband switching point for example...
« Last Edit: April 10, 2014, 09:32:46 PM by julex » Logged
ddillenger
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« Reply #118 on: April 10, 2014, 09:45:39 PM »

Julex, I have tuned several cars with the spartan with 0 issues. I love them. I have never had a single issue getting them to read properly with the supplied sensor.

Maybe yours is defective?
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julex
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« Reply #119 on: April 11, 2014, 07:21:39 AM »

Julex, I have tuned several cars with the spartan with 0 issues. I love them. I have never had a single issue getting them to read properly with the supplied sensor.

Maybe yours is defective?

That's the kicker, it works 100% right when you use voltmeter or hook it up to AFR gauge, all that until you HOOK IT UP TO ECU.

As soon as you hook it up to ECU, story changes. It is almost like just the fact of ECU trying to read the voltage causes too much load on Spartan and voltage drop develops....weird.

Did you verify on these cars that during the decel/fuel cut off you're getting full 5V from uuhsk_w / uuhsk2_w? That would be the most basic test as it would show the max voltage ECU can see for "10.00" AFR (before offsetting by 10.00)... again it is not 5V on my car (verified with voltmeter).

If it is defective, then be it but I also got no peep back from 14point7, toalan@14point7.com, on this and its been several days now. No reply on their forums either. This means their CS is also crap.


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