Estimated fuel delivery required to idle and run the engine under light loads.
This section dictates how the ECU calculates fuel delivery. You must input your exact engine displacement, injector size (cc/min or lbs/hr), and fuel system type (return vs. returnless). If you upgrade from stock 300cc injectors to 1000cc injectors, the ECU scales the base map's fuel delivery using these constants. Trigger Settings (The Crank and Cam Sensors)
ECUMaster frequently updates its ECU firmware. If a base map was created on an older version of the software, the ECU might produce a "Warning" message when you try to load it. Always ensure your ECU is running the same firmware version as the base map you intend to use. Version mismatches are a primary cause of start-up issues and can be easily avoided with a quick check. ecumaster base maps
At this stage, you can safely load the vehicle onto a trailer or gently drive it onto a chassis dynamometer (dyno). Your professional tuner will use this stable baseline to map the engine under load, optimizing the VE tables, ignition advance, variable valve timing (VVT), and boost control strategies to extract maximum reliable performance.
Once your pre-start checks are complete, reinstall your spark plugs and enable your fuel pump. Prepare to start the engine with your eyes glued to the laptop screen or a dashboard display. Estimated fuel delivery required to idle and run
Do not assume the base map is perfectly calibrated to your physical chassis. You must manually verify and calibrate:
| User Type | Recommended? | Notes | |-----------|--------------|-------| | Beginner DIY | ✅ Yes | Good to learn startup & idle tuning, but must verify fuel/ignition before revving. | | Experienced tuner | ✅ Yes (as a time-saver) | Quick way to set up triggers & sensors, but you’ll rewrite fuel/ignition maps. | | Track/race only | ❌ No | Base maps are not safe for WOT or boosted runs — you need a custom dyno tune. | returnless)
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Ensure your fuel system is building proper pressure. From Base Map to Dyno
"Do you want to write the opened project to the connected EMU device?" ECUMaster USA 3. Critical Pre-Start Verification
Navigate to the TPS calibration menu. With the ignition on, leave your foot off the gas pedal and click "Calibrate Zero." Then, press the pedal fully to the floor and click "Calibrate Full." This ensures the ECU accurately tracks acceleration enrichment and idle states. 4. Sensor Verification