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ECUMaster EMU CSV Export

v1.0.0

CSV log files exported from ECUMaster EMU Pro and EMU Black ECUs. Format characteristics: - Semicolon (;) or tab delimited - First column is TIME (in seconds) - Channel names use path-style notation (e.g., "engine/rpm", "sensors/tps1") - Sparse data with empty cells (previous value should be held)

ecumaster
33 channels
csv
Website

File Format

Type
csv
Extensions
.csv, .log
Delimiter
semicolon

Channels (33)

correction

knock_retardKnock Retard

Timing retard from knock detection

degreesfloat0 - 20
fuel_correctionFuel Correction

Active fuel correction percentage

percentfloat-50 - 50

drivetrain

gearGear Position

Current gear

gearint0 - 8

electrical

battery_voltageBattery Voltage

System battery voltage

voltsfloat0 - 20

engine

rpmEngine RPM

Engine crankshaft rotational speed

rpmfloat0 - 20000
tpsThrottle Position

Main throttle position sensor

percentfloat0 - 100
tps_2Throttle Position 2

Secondary throttle position sensor

percentfloat0 - 100
vvt_intakeVVT Intake Position

Variable valve timing intake cam position

degreesfloat-50 - 50
vvt_exhaustVVT Exhaust Position

Variable valve timing exhaust cam position

degreesfloat-50 - 50
dbw_targetDBW Target

Drive-by-wire throttle target position

percentfloat0 - 100
dbw_positionDBW Position

Drive-by-wire throttle actual position

percentfloat0 - 100
torque_requestedTorque Requested

Requested torque from torque management

nmfloat0 - 1000

fuel

lambdaLambda

Lambda value from wideband O2

lambdafloat0.6 - 1.5
lambda_2Lambda 2

Lambda value from second wideband O2

lambdafloat0.6 - 1.5
afrAir-Fuel Ratio

Calculated AFR from lambda

afrfloat10 - 20
lambda_targetLambda Target

Target lambda from ECU tuning

lambdafloat0.6 - 1.5
duty_cycleInjector Duty Cycle

Fuel injector duty cycle

percentfloat0 - 100
pulse_widthInjector Pulse Width

Fuel injector pulse width

millisecondsfloat0 - 50
fuel_flowFuel Flow Rate

Instantaneous fuel flow rate

cc/minfloat0 - 10000

ignition

ignition_advanceIgnition Advance

Spark timing advance

degreesfloat-20 - 60
dwellIgnition Dwell

Coil dwell time

millisecondsfloat0 - 10
knock_levelKnock Level

Knock sensor signal level

voltsfloat0 - 5

pressure

mapManifold Pressure

Manifold absolute pressure

kpafloat0 - 400
boostBoost Pressure

Boost pressure (gauge)

kpafloat-100 - 300
barometricBarometric Pressure

Atmospheric pressure

kpafloat80 - 110
fuel_pressureFuel Pressure

Fuel rail pressure

kpafloat0 - 1000
oil_pressureOil Pressure

Engine oil pressure

kpafloat0 - 1000

speed

vehicle_speedVehicle Speed

Vehicle ground speed

kphfloat0 - 400

system

timeTime

Log timestamp in seconds

secondsfloat

temperature

coolant_tempCoolant Temperature

Engine coolant temperature

celsiusfloat-40 - 150
iatIntake Air Temperature

Intake air temperature

celsiusfloat-40 - 100
oil_tempOil Temperature

Engine oil temperature

celsiusfloat-40 - 180
fuel_tempFuel Temperature

Fuel temperature

celsiusfloat-40 - 100

Metadata

Tested With
ECUMaster EMU ProECUMaster EMU Black
Known Issues
  • Sparse data requires holding previous values for empty cells
  • Delimiter may be semicolon or tab depending on export settings