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ice1874193

10-30-2010, 08:24 PM

Originally posted this in the Turbo thread mentioned above but think it belongs here...
Link - http://www.evoxforums.com/forums/showthread.php?p=612325#post612325

Has anyone put together a list of expected values for Data Logging to help n00bs like myself interpert results until I gain more experience? I'm just starting to read up on everything I can so I can start playing around.

I would find something like this extremely useful. Based on the knowledge base on this forum I'm sure this could be put together rather quickly and would be a big help for a majority of the inexperienced users. Something on the 10 most import data logging elements would be a good place to start. From what i've read so far it looks like something that may be useful to start with would be:

Air/Fuel Ratio
Mass Air Flow
Boost Pressure
Knock Retard
Learned Knock
Waste Gate Duty Cycle
Long Term Fuel Trim
Short Term Fuel Trim
Ignition Advance
Upper Ignition Timing
Lower Ignition Timing

For Example (I made up the values since I have no clue what the vals should be)

(Data Logging Column Headings) - (My Sample/Example Data)

Datalog Parameter - Knock Retard
Common Acronym - KNKRTD (Not sure if it applies to all but like AFR,MAF)
Parameter Type - Expressed as a % (Other possible Values would be PSI, Volts, RPM, Load, etc...)
Parameter Type Description - Determined by val1/val2 * val3 (or whatever - for PSI it would just say "Pounds per Square Inch")
Range of Values - 0.0 to 7.0
Normal (Safe) Range - 0.0 - 3.0
Unusual Range - 3.0 - 4.0
Extremely High (Unsafe Range) - 4.0 and Higher
Common Associated CEL Codes - P######, P######
Description of parameter (Borrowed from Travis@Cobb post) - The processes that manage optimal ignition timing at light load are complex and vary by vehicle type. Some ignition timing adjustments are active and based upon sensor feedback. One such sensor is the "knock sensor." This sensor is a simple microphone that listens for engine noise. Complex signal processing inside the ECU helps discriminate detonation from other types of engine noise. The thresholds for noise vs knock vary not only by engine speed but by engine load. The ECU will react to engine noise by actively removing ignition timing. This low-load "knock correction" is a normal and desirable process that promotes optimal ignition timing.

Is there any interest in putting this together?


EvoXForums.com - Mitsubishi Lancer Evolution X Forums > Evo X > Evo X Tuning > ECUFlash / OpenECU > ECUFlash User Manual PDA : ECUFlash User Manual Kooldino 04-29-2010, 03:09 PM This will be perpetually updated. Discussions for the different sections of this manual can be found in the following threads: Turbo (http://www.evoxforums.com/forums/showthread.php?t=29295) Fueling Ignition Enjoy. ice1874193 10-30-2010, 08:24 PM Originally posted this in the Turbo thread mentioned above but think it belongs here... Link - http://www.evoxforums.com/forums/showthread.php?p=612325#post612325 Has anyone put together a list of expected values for Data Logging to help n00bs like myself interpert results until I gain more experience? I'm just starting to read up on everything I can so I can start playing around. I would find something like this extremely useful. Based on the knowledge base on this forum I'm sure this could be put together rather quickly and would be a big help for a majority of the inexperienced users. Something on the 10 most import data logging elements would be a good place to start. From what i've read so far it looks like something that may be useful to start with would be: Air/Fuel Ratio Mass Air Flow Boost Pressure Knock Retard Learned Knock Waste Gate Duty Cycle Long Term Fuel Trim Short Term Fuel Trim Ignition Advance Upper Ignition Timing Lower Ignition Timing For Example (I made up the values since I have no clue what the vals should be) (Data Logging Column Headings) - (My Sample/Example Data) Datalog Parameter - Knock Retard Common Acronym - KNKRTD (Not sure if it applies to all but like AFR,MAF) Parameter Type - Expressed as a % (Other possible Values would be PSI, Volts, RPM, Load, etc...) Parameter Type Description - Determined by val1/val2 * val3 (or whatever - for PSI it would just say "Pounds per Square Inch") Range of Values - 0.0 to 7.0 Normal (Safe) Range - 0.0 - 3.0 Unusual Range - 3.0 - 4.0 Extremely High (Unsafe Range) - 4.0 and Higher Common Associated CEL Codes - P######, P###### Description of parameter (Borrowed from Travis@Cobb post) - The processes that manage optimal ignition timing at light load are complex and vary by vehicle type. Some ignition timing adjustments are active and based upon sensor feedback. One such sensor is the "knock sensor." This sensor is a simple microphone that listens for engine noise. Complex signal processing inside the ECU helps discriminate detonation from other types of engine noise. The thresholds for noise vs knock vary not only by engine speed but by engine load. The ECU will react to engine noise by actively removing ignition timing. This low-load "knock correction" is a normal and desirable process that promotes optimal ignition timing. Is there any interest in putting this together?