**** 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.

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 one of the following links to download your ECU's .bin file. Place the .bin file in the ME7logger folder.
--Audi RS6 4.2TT BCY 0261207857 4D1907558 366304
--Audi RS6 4.2TT BCY 450HP 4D1907558 0261207857 367724
--RS6 4D1907558 0004 0261207857 367724 (not sure if this is the same as the first one or not)
--Audi RS6 4.2TT BCY 450HP 4D1907558B 0261208051 1037368087
--Audi RS6 Plus 4.2TT BRV 480HP 4D1907558F 0261208728 1037370934

-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.

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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Heads up that I wrote this guide for the B5 S4, but the variables for the RS6 should be pretty much the same, just there's two MAF's and the cylinder numbers keep going up to 8 of course

Common variables to log that you see in 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)}