This screen configures and calibrates the Manifold Absolute Pressure (MAP) sensor used for:
The RM-Primis ECU includes a high-quality internal 400 kPa MAP sensor.
Int. MAP in the Input Select dropdownThis option is ideal for boosted engines requiring up to ~44 psi absolute (around 30 psi of boost).
Always confirm the table populates from 0.2V ≈ 20 kPa to 4.7V ≈ 400 kPa when using the internal sensor.
You can also use any external 0–5V MAP sensor by:
Ensure the sensor has proper 5V supply and ground routing. Use shielded wiring for long runs.
| Voltage (V) | MAP (kPa) |
|---|---|
| 4.670 | 400.00 |
| 3.712 | 318.57 |
| 2.754 | 237.13 |
| 1.158 | 101.43 |
| 0.200 | 20.00 |
| Field | Description |
|---|---|
| Min Value | Minimum expected voltage (e.g., 0.095 V) |
| Max Value | Maximum expected voltage (e.g., 4.900 V) |
These limits help detect wiring issues (short to ground or V+, open circuit). If voltage goes outside this range, the ECU can:
Displays live sensor readings for validation and tuning:
Use this monitor during calibration and logging to confirm sensor health and responsiveness.
The Event Average option tells the ECU to:
Best used in high-performance, N/A engines with unstable vacuum at idle.
| Tool | Function |
|---|---|
| Load | Load previously saved MAP calibration |
| Store | Save current table to ECU flash |
| Quick Cal | Load preset sensor data or manually calibrate |
| Import | Load custom calibration files from external sources |
| Feature | Internal MAP | External MAP (0–5V) |
|---|---|---|
| Input | Int. MAP |
Any analog input |
| Calibration Method | Quick Cal (400 kPa) | Quick Cal or manual entry |
| Max Pressure | 400 kPa | Depends on external sensor |
| Voltage Range | 0.2–4.7 V typical | Varies |
| Event Average | Optional (TDC sampling) | Useful for cams/NA engines |