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

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FUEL:

All fuel-related adjustments must be performed responsibly. Incorrect settings may cause severe engine damage.

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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

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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.

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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.

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Fuel Trim Configuration

• To disable the long-term fuel trim, set value to 132
• To re-enable the long-term fuel trim, set value to 135

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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.

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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

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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.

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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.

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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

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IGNITION

Incorrect ignition settings may cause engine knock and severe engine damage.

Always validate changes using knock logs and dyno testing.

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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.

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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.

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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.

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Dwell Maps

Modification is generally not recommended unless:

• Ignition coils are replaced
• System voltage behavior changes

Improper dwell settings may damage ignition coils.

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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).

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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.

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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.

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Project Configuration

Catalyst Diagnosis

Map type: Single value

Set to:

• 1 → Catalyst diagnosis enabled
• 0 → Catalyst diagnosis disabled (cat-less setup)

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Catalyst Diagnosis (OBD2 Mode)

Map type: Single value

Set to:

• 1 → Enabled
• 0 → Disabled (cat-less setup)

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Lambda Sensor Configuration

Map type: Single value

Set to:

• 1 → Post-catalyst lambda sensor disabled
• 0 → Sensor enabled

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EVAP / Tank Ventilation System

Map type: Single value

Set to:

• 1 → System enabled
• 0 → EVAP system removed

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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.