Driver Wish / Pedal Interpretation

🧠 Part of the TuningBot ECU Knowledge Base — in-depth documentation on ECU logic, maps, emissions systems and safe calibration methods.

Driver wish (or pedal interpretation) maps translate accelerator pedal position into a torque request. This is the starting point of the entire torque-based control system and directly affects throttle response and power delivery feel.

Panoramica

The ECU reads accelerator pedal position sensors and uses driver wish maps to determine how much torque the driver is requesting. This request then flows through limiters and arbitration before reaching the engine.

Controlled Signals

  • Accelerator pedal position 1 & 2
  • Vehicle speed
  • Engine RPM
  • Selected gear
  • Driving mode selection

Maps Involved

  • Mappe dei desideri dei conducenti vs pedal position/RPM
  • Kick-down Maps
  • Cruise Control Target Maps
  • Sport/Eco Mode Scaling Maps
  • Torque Rate Limiting Maps

Logic Sequence

Pedal Position → Driver Wish Lookup
         ↓
Mode Selection (Sport/Eco/Normal)
         ↓
Rate Limiting (smooth torque rise)
         ↓
Output: Requested Torque

Calibration Objectives

  • Natural, predictable throttle feel
  • Appropriate response for vehicle type
  • Smooth tip-in without surge

Calibration Strategy

  • Steeper driver wish curve = more aggressive response
  • Remove artificial delays for sportier feel
  • Coordinate with actual torque increases

Diagnostica

  • APP sensor correlation faults
  • Limp mode from pedal issues
  • Inconsistent response complaints

Best Practices

  • Driver wish changes without power increase feel “fake”
  • Match response to power delivery for natural feel

⚡

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