**** Complete Guide on How to Take and Graph Logs ****

[jibberjive]

Since this took me a lot of hours to cobble together myself, and a good few days to get everything working together, I figure I'd put up a step-by-step 'How To' thread to help shorten that learning curve to like 30 mins for people. Shout out to Tony@NefMoto for creating the forum, Setzi for creating the powerful logging utility, j2mc for creating the logger GUI, and for Nyet for developing (and maintaining with upgrades) the ECUxPlot. Extra props to them for not only developing them, but for releasing them for the public to use.

This is just a "quick start" guide to start logging your car. To learn how to interpret the logs and tune your car, it's going to require a lot more substantial of an effort and research. For that, I suggest the forums over at www.nefmoto.com, www.quattroworld.com, here on www.audizine.com, and contribute back to the forums when you have the opportunity.

COMPLETE GUIDE ON HOW TO TAKE LOGS:

0. Buy the blue "409.1 FT232RL OBD2" cable from this seller:
http://stores.ebay.com/alpha-bid

0.5 Go to www.nefmoto.com and register for the forums (you need to be registered to download the attachments).

1. Download the driver for that cable from the first post here (it's FTDI D2XX), and install it:
http://nefariousmotorsports.com/foru...c=2200.0title=

2. Go to this thread and download/unzip the latest version of Setzi's ME7logger (as of this post, it's V1.17, it's attached to the first post in that thread):
http://nefariousmotorsports.com/foru...hp?topic=837.0

3. Go to this thread and download the GUI attached to the first post. Place the GUI in the ME7logger folder. Make a shortcut for the GUI on your desktop:
http://nefariousmotorsports.com/foru...c=1079.0title=

4. Go to this subsection and download your stock .bin file (most of the S4 files are towards the end and posted by Tony@NefMoto). Place the .bin file inside the images folder, inside the ME7logger folder.
http://nefariousmotorsports.com/foru...php?board=17.0
M-box "002" file is located here for example (take note that there are two different m-box files, the "001" and the "002"): http://nefariousmotorsports.com/foru...ic=168.0title=

-Optional method of getting the .bin for your ECU- Use 'NefMoto ECU Flasher' to read your own .bin off of your ECU. Go to this forum, and the latest version of his flasher should be one of the first few sticky posts at the top:
http://nefariousmotorsports.com/foru...c=2200.0title=

5. Click on the GUI shortcut on your desktop. Click the "Create ECU File" button, and select the .bin file from step 4.

** If you're having hangups here, and the GUI is causing the program to say something like "cannot find the file path specified", then you'll have to run the program for step #5 via the command prompt. CLICK HERE for a walkthrough of how to run it via command prompt.

6. Still in the GUI program, click the "Create Template File" button and navigate to the .bin file from step 4 again.

7. In Windows (not in the GUI) navigate to the "logs" folder inside of the ME7logger folder and locate the .cfg file that was created in step 6 (it'll be the same name as your .bin file from step 4). Open the .cfg file in notepad and erase the ";" in front of the variables you want to log (see end of this post for the common variables in the regular "Mark P" excel graph templates that you see posted here). You can also change the "SamplesPerSecond" up at the top of that file as well. I'd probably put it at 20 samples/sec and leave it alone if it isn't giving you any connection issues when logging.

8. You're now ready to log. With the car running and the cable plugged into the car's OBDII port and connected to the laptop, open the GUI again, highlight your .cfg file in the window, select the COM port that your cable is plugged into, and click the "Start ME7Logger button". You'll see !! and . as it's logging. Press ctrl-c to stop logging. The log file is now automatically saved in the "logs" folder inside of the ME7logger folder.

9. Any issues, consult the README file in the doc folder (which is inside the ME7logger folder, open it with wordpad), consult the ME7Logger thread in step 2, and finally consult the GUI thread in step 3. After exhausting the previous resources, post a new thread in the logging section on Nefmoto if need be.


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Common variables in the 'Mark P' excel graphs (so to log these, just delete the semi-colon in front of them inside of your .cfg file):

nmot_w ;{EngineSpeed} ; {Motordrehzahl}
pus_w ;{BaroPressure} ; {Umgebungsdruck ohne Umschaltung auf Ersatzwert bei Sensorfehler}
plsol_w ;{BoostPressureDesired} ; {Soll-Ladedruck}
pvdkds_w ;{BoostPressureActual} ; {Druck vor Drosselklappe von Drucksensor (word)}
ldtvm ;{WastegateDutyCycle} ; {LDR Tastverhältnis , moduliert (Endergebnis)}
mshfm_w ;{MassAirFlow} ; {Massenstrom HFM 16-Bit Größe}
tans ;{IntakeAirTemperature} ; {Ansaugluft - Temperatur}
wped_w ;{AccelPedalPosition} ; {normierter Fahrpedalwinkel}
wdkba ;{ThrottlePlateAngle} ; {Drosselklappenwinkel bezogen auf unteren Anschlag}

dwkrz_0 ;{IgnitionRetardCyl1}
dwkrz_3 ;{IgnitionRetardCyl2}
dwkrz_2 ;{IgnitionRetardCyl3}
dwkrz_5 ;{IgnitionRetardCyl4}
dwkrz_1 ;{IgnitionRetardCyl5}
dwkrz_4 ;{IgnitionRetardCyl6}
zwout ;{IgnitionTimingAngleOverall} ; {Zündwinkel-Ausgabe}

rkrn_w_0 ;{KnockVoltageCyl1}
rkrn_w_3 ;{KnockVoltageCyl2}
rkrn_w_2 ;{KnockVoltageCyl3}
rkrn_w_5 ;{KnockVoltageCyl4}
rkrn_w_1 ;{KnockVoltageCyl5}
rkrn_w_4 ;{KnockVoltageCyl6}

vfil_w ;{VehicleSpeed} ; {gefilterte Geschwindigkeit (16-Bit)}
gangi ;{SelectedGear} ; {Ist-Gang vom CAN bei AT oder aus n/v bei HS}

lamsbg_w ;{AirFuelRatioDesired} ; {Lambdasoll Begrenzung (word)}
fr_w ;{LambdaControl}
ti_b1 ;{FuelInjectorOnTime} ; {Einspritzzeit für EV's auf Bank1}
tats_w ;{EGTSensor}
tats2_w ;{EGTSensorBank2}
tabgm ;{EGTModelBeforeCat}
tabgm2 ;{EGTModelBeforeCatBank2}

usvk ;{O2SVoltageSensor1}
usvk2 ;{O2SVoltageSensor1Bank2}

rl_w ;{EngineLoad} ; {relative Luftfüllung}
rlmx_w ;{EngineLoadSpecified}
rlmax_w ;{EngineLoadCorrected}
rlsol_w ;{EngineLoadRequested}


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Long Term Fuel Trim Partial (note, the fra's are in a scalar form (so you need to subtract 1 and multiply by 100 if you want a percent, for example an fra_w value of 1.02050 is 2.050%)):

fra2_w ;{AdaptationPartialBank2} ; {multiplikative Gemischkorrektur der Gemischadaption (Word) Bank 2}
fra_w ;{AdaptationPartial} ; {multiplikative Gemischkorrektur der Gemischadaption (Word)}


Long Term Fuel Trim Idle ('per time', which just means that these variables aren't necessarily the real final 'idle fuel trim' percentage that the ECU is multiplying the final fueling by, rather these just give you an idea of which side the idle fuel trims are on (+ means that the ECU is adding fuel because it's too lean, - means the ECU is pulling fuel because it's too rich), so these just you just show you which direction to adjust the fueling, not necessarily the magnitude to adjust it. The real variables for the final value of the idle LTFT's (rka_w/rka2_w) aren't defined automatically in the .ecu file created by the ME7Logger program. Also note that these values are in percentages, so a value of 1.0500 is 1.0500%):

rkat2_w ;{AdaptationIdleBank2} ; {additive Gemischkorrektur (pro Zeit) der Gemischadaption Bank 2 (Word)}
rkat_w ;{AdaptationIdle} ; {additive Gemischkorrektur (pro Zeit) der Gemischdaption (Word)}


Short Term Fuel Trims:

frm2_w ;{LambdaControlAvgBank2} ; {schneller Mittelwert des Lambdaregelfaktors (Word) Bank 2}
frm_w ;{LambdaControlAvg} ; {schneller Mittelwert des Lambdaregelfaktors (Word)}

[jibberjive]

HOW TO VIEW THE LOGS:

1. Go here to download Nyet's ECUxPlot (which also works with ME7Logger). Right click and install as administrator.:
http://nefariousmotorsports.com/foru...=1714.0title=/

2. Take an hour to play around with ECUxPlot to see what it consists of. Read the FAQ here http://nefariousmotorsports.com/foru...16497#msg16497 . There's no help file, but it really is pretty self explanatory if you spend a second looking at all of the options. It has a filter that you can turn on-off, that filters out 3rd gear FATS pulls so that you can get graphs containing the data that you're used to seeing on the forums. You really don't need to play with any of the options if you don't want to.

3. You'll want to add your own graphs and save them as presets so that you can easily load them in the future (see logs below for the graphs that I've added to get the same MarkP info, you might want to add a couple of more, or different ones). After you have all of your common graph presets saved that you want, from then on when you open a log file, you can go to "load all presets" under the options bar, and it'll automatically pop up all of your graphs. If you want to save them as picture files to post online or review later, with all of the graphs open go to "export all charts" under the file bar.

4. Tweak your tune and go faster


----ECUxPlot tips & tricks: When you load it, it will load the graph to the size that it was when you last closed it. In addition, the graph size that it first loads is the size that the 'load all presets' command makes all of the other graphs. So if you want all of your graphs a certain size, open ECUxPlot, resize the graph to the size you want, close it, re-open ECUxPlot and load your file. Also, leave the "show FATS window" unchecked until after you've done the "load all presets," or else you'll have a FATS window for every graph. When you save the graphs, the legend is smaller in the saved image than it is on the graph on your screen. Pay careful attention to the axes, as they are filled automatically (so, for example, a 2 degree difference could be shaped like a 20 degree difference IAT curve).

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Graph preset examples (nevermind the actual values in the logs, REALLY, don't compare your logs to these as any type of standard, these are just some random logs to illustrate the ECUxPlot graph presets that you might want to make):

[bigdo26]

Thank you - very helpful for those of us who are not so great with software. This looks to be an excellent writeup, hopefully this is posted over at the nefmoto site as well

[stef2.7t]

eKarma for you Sir!

[happy2B5]

for someone like me (technology challenged evolutionary reject), this is a HUGE help!

Thank you for consolidating...

[Soopaman15]

My S4 is in the shop getting RS6's. Never logged my car, but this will be on my to do list for the summer. Thanks for contributing USEFUL INFO to this forum unlike most.

[Smitty2A4]

This is an amazing post! I am an IT nerd and have a few spare laptops laying around so I am going to be putting together a dedicated machine for the S4 and really wanted to know where to find the software I will need to install and how to set it up. I had been doing some google searches and found a few helpful posts but everything was scattered all over the place.

Thank you very much for taking the time to put this all together. This needs to be stickied or put somewhere easy to find, for now I will have to bookmark it.

[sherbet]

Thanks man! Im am really bad with tech. stuff and have been wondering how to log the bitch.

Im feeling a sticky?

[TomyG]

Hah, I was wondering this morning if there was anything like this.

Thanks for the write up!

[jasonsowers]

Good work but no one one audizine knows how to fucking read so this post is worthless.

[happy2B5]

Good work but no one on audizine knows how to fucking read so this post is worthless.

fixed...or spell apparently

i kid, i kid...

[jibberjive]

Good work but no one one audizine knows how to fucking read so this post is worthless.

And here's Jason, on AZ... to complain about AZ

[michael66899]

Good work but no one one audizine knows how to fucking read so this post is worthless.

Hah your such an idiot, nice writeup Jibber.

[bergtho]

Very helpful, thanks.

[Gujuhammer]

Very nice. I'll be looking to do this very soon.

[Trile]

as the french would say 'Grasias'

[nefkntym]

Nice write up Jibber.

[maxxxs4]

that's exactly what I was looking for,

Thanks alot

[MAS4K04]

I vote for a sticky

[Malmhead]

Correct me if I am wrong, but this won't work if you don't have the bin file for the tune on your ECU.

[infinkc]

Correct me if I am wrong, but this won't work if you don't have the bin file for the tune on your ECU.

THe Bins are posted on the nefmoto site as the OP stated in his guide

[RickG]

as the french would say 'Grasias'

Lol I think you mean the Spaniards. French would be 'Merci tabarnac'

This is one of the best things about this site, sharing great information that would take me days if not weeks of frustrated searching.Thanks Jibber

[happy2B5]

THe Bins are posted on the nefmoto site as the OP stated in his guide

i guess jason was correct after all...

[julex]

Thanks Jibber.

Somebody will inevitable ask "but what about ecux" anyway, lol.

[judeisnotobscur]

I vote for a sticky

x2 sticky

[Malmhead]

THe Bins are posted on the nefmoto site as the OP stated in his guide

i guess jason was correct after all...

I did read-- anyone who doesn't have a stock ECU or hasn't flashed with a bin file from NefMoto can't use setzi's logger.

[julex]

I did read-- anyone who doesn't have a stock ECU or hasn't flashed with a bin file from NefMoto can't use setzi's logger.

Why? No tuner changes actual code in the bin file leaving memory locations intact so it will work for all tunes out there. Regardless if you have apr, giac, vast, pl, etc, tune, you can generate proper map by running stock tune file through the Me7 logger. So long you do it with the same "box"/ECU number, you're golden.

[jibberjive]

I did read-- anyone who doesn't have a stock ECU or hasn't flashed with a bin file from NefMoto can't use setzi's logger.

That's not correct. Go to the link in step #4 of the first post and find the .bin for the box you have. I'm pretty sure almost every single B5 S4 box's file is there. If your .bin isn't there for some reason, go to the "original file request" section and post a thread, or simply pull your .bin off of your own ECU with the same blue OBD II cable and the NefMoto reading/flashing software. But like I said, if you own a B5 S4, you shouldn't have to pull your own file, rather find it in the link in post #4.

[chinaren]

Awesome mate... when is your semester over? so we can do some tuning??

[mikehawk666]

great thread, thanks for the useful information.

[bw86]

Very nice

[phila_dot]

lamfa_w ;{TargetAFRDriverRequest}
fr_w ;{LambdaControl}

Before there's a million threads asking why they are always running lambda 1, do not use lamfa for target AFR and fr for actual AFR.

You need to use lamsbg_w for target AFR and actual AFR cannot be logged without wideband

[jibberjive]

Before there's a million threads asking why they are always running lambda 1, do not use lamfa for target AFR and fr for actual AFR.

You need to use lamsbg_w for target AFR and actual AFR cannot be logged without wideband

Edited. Thanks for catching that. My lamfa_w = lamsbg_w with how I have my fueling set up, but you're right, it's the wrong variable to log for desired AFR (in my personal logs I log them both, as well as like 20 other variables not listed in the MarkP stuff I wrote above). Let me know if you catch anything else.

Wise comment about the wideband as well, trying to use narrowband O2 voltages to find actual AFR at WOT/open loop is not wise. Need a wideband for that.

[UkuRiSh]

Thanks man .

[AudiHolicS4]

Thanks for your write up jibber

[DeleriousZ]

Total noob question, but do you risk overwriting your flashed ecu (apr, or whatever) with the stock tune in any way when doing this?

[jibberjive]

Total noob question, but do you risk overwriting your flashed ecu (apr, or whatever) with the stock tune in any way when doing this?

Nope, no risk at all. You're not connecting to the ECU in a way that can overwrite anything. Your laptop can die (as has happened to me) in the middle of logging, and nothing can happen to the ECU.

[FlaS4]

Thanks. Saved for future reference.

[maxxxs4]

jibb, so If I understood well about the .bin files, J-Fonz sent me a .bin flash file so I can use this one instead of the stock one with the logger right?

[jibberjive]

jibb, so If I understood well about the .bin files, J-Fonz sent me a .bin flash file so I can use this one instead of the stock one with the logger right?

Edit: Yes, you can use the tuned .bin to create the other files.