CAN data logging for tuning
Thread Starter
MBWorld Fanatic!
Joined: Jul 2014
Posts: 1,248
Likes: 197
2018 W213 E 63 S AMG Sedan
CAN data logging for tuning
JB4 + bootmod3 are really cool tools because they log data really well. If you haven't already seen this, check this out: http://bootmod3.net/log?id=5c7f365ec090c6580e8e104f
It is a run somebody was able to do, upload to the "cloud" (lol), then share with their tuner, who can make a custom tune based off of the data.
This is done through https://en.wikipedia.org/wiki/OBD-II_PIDs#Service_01
The reality is, that's not all of the data these great tools JB4 / bootmod3 scrape together. The reality is, a lot of manufacturers deviate from that standard to some degree and might either not include the data in the right position hex/service wise, or might expose additional data in different services (all with very seemingly cryptic formats/calculations required to extract that data)
Here are some freely available PIDs that are known online:
Can anybody with some tuning experience chime in and say, what data is missing here? What does it take to make a great tune that isn't on this list?
I'm working on a Mercedes CAN logger, if anybody is interested.
It is a run somebody was able to do, upload to the "cloud" (lol), then share with their tuner, who can make a custom tune based off of the data.
This is done through https://en.wikipedia.org/wiki/OBD-II_PIDs#Service_01
The reality is, that's not all of the data these great tools JB4 / bootmod3 scrape together. The reality is, a lot of manufacturers deviate from that standard to some degree and might either not include the data in the right position hex/service wise, or might expose additional data in different services (all with very seemingly cryptic formats/calculations required to extract that data)
Here are some freely available PIDs that are known online:
Absolute Barometric pressure
Absolute load
Accelerator pedal position
Air to fuel ratio
Air-fuel equivalence ratio
Ambient air temperature
Barometric Pressure
Battery Voltage
Boost Target Difference
Boost air temperature
Closed Loop AFR Target
Closed Loop Timing (Normal)
Closed Loop Timing (Overload)
Clutch pedal position
Commanded throttle actuator
Control module voltage
Coolant Temperature (Celsius)
Coolant Temperature
Engine RPM
Fan On Engine Coolant Temperature
Fan On Voltage Adjustment
Fuel Rail Gauge Pressure
Fuel injection amount
Fuel injection pulse width
Fuel pressure sensor voltage
Fuel–Air commanded equivalence ratio
Fuel–Air commanded ratio
Idle RPM (In Gear, A/C)
Idle RPM (In Gear, No A/C)
Idle RPM (Not in gear, A/C on)
Idle RPM - Neutral
Intake Air Temperature (Celsius)
Intake Cam Advance (VVT)
Intake air temperature
Intake manifold absolute pressure
Knock retard
Load
Long term fuel trim (bank 2)
Long term fuel trim
MAF Calibration 1
MAF Calibration 2
MAF sensor voltage
MAP sensor voltage
Mass air flow rate
Maximum Load Limit
Neutral gear position
Open Loop Timing (Normal)
Open Loop Timing (Overload)
Overboost Fuel Cut
Overboost Throttle Cut
Overload Protection Fuel Cut
Oxygen sensor voltage
RPM Limit
RPM
Relative throttle position
Requested Throttle Position
Short term fuel trim (bank 2)
Short term fuel trim (primary)
Short term fuel trim (secondary)
Speed Limit (Fuel cut)
Speed Limit (Throttle Close)
Speed Limit Threshold (Fuel Cut)
Speed Limit Threshold (Throttle Close)
Target engine RPM
Target fuel rail pressure
Timing advance
Valve timing
Vehicle speed
Voltage
Wastegate control solenoid duty cycle
Absolute load
Accelerator pedal position
Air to fuel ratio
Air-fuel equivalence ratio
Ambient air temperature
Barometric Pressure
Battery Voltage
Boost Target Difference
Boost air temperature
Closed Loop AFR Target
Closed Loop Timing (Normal)
Closed Loop Timing (Overload)
Clutch pedal position
Commanded throttle actuator
Control module voltage
Coolant Temperature (Celsius)
Coolant Temperature
Engine RPM
Fan On Engine Coolant Temperature
Fan On Voltage Adjustment
Fuel Rail Gauge Pressure
Fuel injection amount
Fuel injection pulse width
Fuel pressure sensor voltage
Fuel–Air commanded equivalence ratio
Fuel–Air commanded ratio
Idle RPM (In Gear, A/C)
Idle RPM (In Gear, No A/C)
Idle RPM (Not in gear, A/C on)
Idle RPM - Neutral
Intake Air Temperature (Celsius)
Intake Cam Advance (VVT)
Intake air temperature
Intake manifold absolute pressure
Knock retard
Load
Long term fuel trim (bank 2)
Long term fuel trim
MAF Calibration 1
MAF Calibration 2
MAF sensor voltage
MAP sensor voltage
Mass air flow rate
Maximum Load Limit
Neutral gear position
Open Loop Timing (Normal)
Open Loop Timing (Overload)
Overboost Fuel Cut
Overboost Throttle Cut
Overload Protection Fuel Cut
Oxygen sensor voltage
RPM Limit
RPM
Relative throttle position
Requested Throttle Position
Short term fuel trim (bank 2)
Short term fuel trim (primary)
Short term fuel trim (secondary)
Speed Limit (Fuel cut)
Speed Limit (Throttle Close)
Speed Limit Threshold (Fuel Cut)
Speed Limit Threshold (Throttle Close)
Target engine RPM
Target fuel rail pressure
Timing advance
Valve timing
Vehicle speed
Voltage
Wastegate control solenoid duty cycle
I'm working on a Mercedes CAN logger, if anybody is interested.
