Maps helper (Editor)
ACCELERATOR PEDAL:
Desired Torque Profile (0/1/2/3/4/Reverse)
X axis: Engine speed (RPM)
Y axis: Accelerator pedal position (%)
Map: Target engine torque
This map defines the relationship between accelerator pedal position and requested engine torque (throttle response).
- Lower values → smoother and more progressive response
- Higher values → more aggressive and dynamic response
Adjust carefully to maintain drivability and traction.
BOOST CONTROL
Boost Solenoid Duty Cycle
X axis: Engine speed (RPM)
Y axis: Actual gear
Map: Boost control solenoid duty cycle (%)
This map controls the duty cycle of the boost control solenoid.
Continuous high-duty operation may reduce solenoid valve lifespan.
To prevent unnecessary solenoid activity:
- Set appropriate minimum engine speed
- Set appropriate minimum MAP pressure
FUEL:
All fuel-related adjustments must be performed responsibly. Incorrect settings may cause severe engine damage.
Cold Start Factor
X axis: Engine coolant temperature (°C)
Map: Cold start fuel correction factor
A cold engine requires additional fuel for stable operation.
Adjust this map if:
- Idle is unstable during warm-up
- AFR/lambda is incorrect during cold start
- Engine stalls or runs excessively rich during warm-up
Fuel Mass to Injection Time Conversion
Map type: Single value
Defines the conversion factor between calculated fuel mass and injector opening time.
Adjustment is required when replacing injectors.
- Larger injectors → lower map value
- Smaller injectors → higher map value
Always verify changes using logs.
Injector Linearization Correction
X axis: Engine speed (RPM)
Y axis: Injection time (ms)
Map: Fuel correction factor
This map corrects injector non-linearity.
- Higher values → more injected fuel
- Lower values → less injected fuel
Adjust using lambda correction logs.
Ensure actual lambda matches target lambda under all load conditions.
Fuel Trim Configuration
I don't know what this map doing :D
Injector Dead Time
X axis: Battery voltage (V)
Map: Injector dead time (ms)
Dead time values are injector-specific.
Adjustment is not required unless injectors are replaced.
Lambda Target
X axis: Engine speed (RPM)
Y axis: Engine load (%)
Map: Target lambda value
Defines the target air-fuel ratio.
Adjust this map to:
- Optimize performance
- Improve fuel economy
- Ensure safe operation under boost
Minimum Measurable Lambda
Map type: Single value
Defines the diagnostic lower limit for the lambda sensor.
If your target lambda is lower than this limit, adjust this value to avoid diagnostic fault codes.
IDLE
Idle Target Speed
X axis: Engine coolant temperature (°C)
Y axis: Actual gear
Map: Target idle speed (RPM)
Defines engine idle speed under different temperature and gear conditions.
RPM Curve After Start
X axis: Time since engine start (s)
Y axis: Engine coolant temperature (°C)
Map: Target idle speed (RPM)
Defines elevated idle speed strategy immediately after engine startup.
Used for:
- Improved cold-start stability
IGNITION
Incorrect ignition settings may cause engine knock and severe engine damage.
Always validate changes using knock logs and dyno testing.
Ignition Advance
X axis: Engine speed (RPM)
Y axis: Engine load (%)
Map: Ignition timing advance (°)
Defines base ignition timing.
Adjust to optimize:
- Power output
- Efficiency
- Knock resistance
Avoid large changes unless you fully understand ignition tuning principles.
Minimum Ignition Angle
(Recommended rename from "Latest possible ignition angle")
X axis: Engine speed (RPM)
Y axis: Engine load (%)
Map: Minimum allowed ignition angle (°)
Defines the lower safety limit for ignition timing.
Adjust only if calculated ignition values fall below this threshold.
Minimum Ignition Angle During Catalyst Heating
X axis: Engine speed (RPM)
Y axis: Engine load (%)
Map: Minimum ignition angle during catalyst heating (°)
Defines ignition timing lower limit during catalyst warm-up phase.
Dwell Maps
Modification is generally not recommended unless:
- Ignition coils are replaced
- System voltage behavior changes
Improper dwell settings may damage ignition coils.
Overrun Fuel Cut-Off (Deceleration)
Fuel Cut-Off Delay During Gear Change
X axis: Engine speed (RPM)
Y axis: Engine load (%)
Map: Delay time (s)
Defines how long fuel is delivered after accelerator release during gear change (clutch engaged).
Overrun Fuel Cut-Off Delay
X axis: Engine speed (RPM)
Y axis: Engine load (%)
Map: Delay time (s)
Defines how long fuel is delivered after accelerator release during engine braking.
Fuel Cut-Off Delay at High RPM and High Catalyst Temperature
X axis: Engine speed (RPM)
Y axis: Catalyst temperature (°C)
Map: Delay time (s)
Defines delay before fuel cut-off under high thermal load conditions.
Project Configuration
Catalyst Diagnosis
Map type: Single value
Set to:
- 1 → Catalyst diagnosis enabled
- 0 → Catalyst diagnosis disabled (cat-less setup)
Catalyst Diagnosis (OBD2 Mode)
Map type: Single value
Set to:
- 1 → Enabled
- 0 → Disabled (cat-less setup)
Lambda Sensor Configuration
Map type: Single value
Set to:
- 1 → Post-catalyst lambda sensor disabled
- 0 → Sensor enabled
EVAP / Tank Ventilation System
Map type: Single value
Set to:
- 1 → System enabled
- 0 → EVAP system removed
VVT Control
Intake Camshaft Advance
X axis: Engine speed (RPM)
Y axis: Engine load (%)
Map: Intake camshaft advance angle (°)
Adjust this map to optimize torque and power delivery.
Dyno validation is strongly recommended for optimal results.
