MyG37 - Parameters For Data-logging

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- - Parameters For Data-logging (https://www.myg37.com/forums/ecu-tuning-dyno-data/300831-parameters-for-data-logging.html)

Parameters For Data-logging

Hey 👋 all. Just looking through the myriad of options for parameters to data log on EcuTek. Curious which ones are the most important outside of obvious like AFR etc. I imagine one answer might be, "depends on what your tuner is asking asking". And that makes sense. But in general, what are the options to select since you can't select them all (there's a limit on parameters with EcuTek).

Cheers!
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Of course the tuner wins, but in general I would consider adding: AFR Target, VTC advance commanded, Engine Speed, VVEL Angle Commanded.

To make the log cleaner, you could skip the following (unless you are monitoring these for a specific reason) : AFR Sensor #1 Heater / #2 Heater, Atmospheric Pressure Sensor, Fan Duty, Mass Air Flow, Power Steering Pully Speed, Purge Duty, Throttle Position Sensor Bank #1 / Bank #2

Outside of AFRS:
Engine load
MAF readings
VTC angles
VVEL angles
Knock retard (full program)
RPM

My tuner asks for snips of 1minute and in 3-5 logs is able to do wonders.

Depending on the car, I will often ask for more/less things - but in general this will provide enough data in most cases to use a useful analysis:

Log Mark
Accelerator Pedal Sensor #1 (V)
AFR Average (afr)
AFR Bank1 (afr)
AFR Bank2 (afr)
AFR Target
AFR Target Final B1 (afr)
AFR Target Final B2 (afr)
Atmospheric Pressure (bar)
Battery Voltage (V)
Coolant Temperature (°C)
Custom Map A Interim
Custom Map A Result
Custom Map B Interim
Custom Map B Result
Custom Map C Interim
Custom Map C Result
Custom Map D Interim
Custom Map D Result
Custom Map E Interim
Custom Map E Result
Custom Map F Interim
Custom Map F Result
Custom Map G Interim
Custom Map G Result
Custom Map H Interim
Custom Map H Result
Custom Map I Interim
Custom Map I Result
Custom Map J Interim
Custom Map J Result
Custom Map K Interim
Custom Map K Result
Custom Map L Interim
Custom Map L Result
Custom Map M Interim
Custom Map M Result
Custom Map N Interim
Custom Map N Result
Custom Map O Interim
Custom Map O Result
Custom Map P Interim
Custom Map P Result
Engine Load (%)
Engine Oil Temperature (°C)
Engine Speed (rpm)
Failsafe Flags
Failsafe Stored Flags
FlexFuel Ethanol Content (%)
Fuel Tank Temperature (°C)
Fuel Trim Long Term Bank #1 (%)
Fuel Trim Long Term Bank #2 (%)
Fuel Trim Short Term Bank #1 (%)
Fuel Trim Short Term Bank #2 (%)
Ignition Correction (°)
Ignition Timing (°)
Ignition Timing Calculated (°)
Injection Pulse Width Bank #1 (ms)
Injection Pulse Width Bank #2 (ms)
Injector Duty Bank 1 (%)
Injector Duty Bank 2 (%)
Intake Air Temperature (°C)
Knock Sensor Cylinder 1
Knock Sensor Cylinder 2
Knock Sensor Cylinder 3
Knock Sensor Cylinder 4
Knock Sensor Cylinder 5
Knock Sensor Cylinder 6
Knock Threshold Cylinder 1
Knock Threshold Cylinder 2
Knock Threshold Cylinder 3
Knock Threshold Cylinder 4
Knock Threshold Cylinder 5
Knock Threshold Cylinder 6
Manifold Absolute Pressure (bar)
Mapswitch Mode
Mass Airflow MAF (g/s)
Mass Airflow SD (g/s)
Mass Airflow Sensor Bank #1 (V)
Mass Airflow Sensor Bank #2 (V)
Purge Duty (%)
Speed Density (DigitalParameter)
Throttle Position Sensor #1 (V)
Vehicle Speed #1 (mph)
VTC Advance Actual #1 (°)
VTC Advance Actual #2 (°)
VTC Advance Commanded (°)
VVEL Actual Valve Duration (°CAM)
VVEL Target Valve Duration (°CAM)

LOL, I was going to post the items Eugene requested, when I realized he's ByTheBay ^^^

That's a much larger list of metrics than you asked for last year.

Quote:

Originally Posted by Rochester (Post 4307434)

LOL, I was going to post the items Eugene requested, when I realized he's ByTheBay ^^^

That's a much larger list of metrics than you asked for last year.

That's because I was tuning the car for you. If I were to log a car that was tuned by someone else, I would want to see (for example) if the knock sensors were desensitized or disabled. This can easily be checked by plotting the KS signal per cyl vs KS threshold for that cyl. If you find that the threshold is elevated above factory then the KS has been desensitized for that condition. If you find that when the KS signal exceeds the KS threshold but the ignition correction remains zero, this means the knock sensors have been fully disabled for that condition. Keep in mind, that under some conditions it is necessary to do these things, but they are done with certain risk involved and the customer should always be informed. This is where I find the biggest problems with tuning, is that these things are done carelessly and without customer consent or understanding.

Educate yourself - knowledge is power

Quote:

Originally Posted by bythabay (Post 4307426)

Thanks, that's awesome. I mean, in a perfect situation, you could log any and all parameters available, no? It seems there is a hard limit on how many you can select in EcuTek. Somehow I feel your list is just a few too many for logging on EcuTek?

Quote:

Originally Posted by bythabay (Post 4307439)

I am impressed there's a knock sensor for each cylinder?

Quote:

Originally Posted by BigSpoon (Post 4307443)

These parameters are copy and pasted from a real log, so the limit has not been exceeded with these parameters logged. If you have reached a limit it means you have selected parameters that are extra to this list.

there are two knock sensors , the per cyl ks values are interpreted and that’s why each cyl has a different threshold value.

Quote:

Originally Posted by bythabay (Post 4307444)

OK so you gotta teach me lol... You're saying you were able to successfully log all 89 of those parameters you listed on EcuTek?! My EcuTek taps out at about 49. I just counted. If you select more than 49ish, it gives an error "Too many parameters for data logging" and you have to un-check a few to get things moving.

What am I doing wrong if you're saying you can log almost 2x the amount that I can?

Quote:

Originally Posted by BigSpoon (Post 4307446)

You probably have different parameters selected. Post your parameter list so we can identify what doesn't match.

Quote:

Originally Posted by bythabay (Post 4307450)

You probably have different parameters selected. Post your parameter list so we can identify what doesn't match.

the way you have posted the parameters, it's difficult to compare because the data can't be copied and pasted into a spreadsheet to see side-by-side. but at first glance it looks like you have extra parameters selected. Reset your parameter selection to default and make sure what you have selected matches what I have listed, it will work. There are subclasses of certain parameters where if you select them, even if you still theoretically have more parameters that you could add, you will still get the error message. It's not exactly clear what parameter sub groups those are.

if you need additional support, feel free to call me at the shop or message me on facebook for a real-time interaction.

Quote:

Originally Posted by bythabay (Post 4307439)

Educate yourself - knowledge is power

True enough. And humility is strength.

BTW, the car continues to run very well since your tune last year. Thank you.