Keep it coherent
Use modifications that suit a light naturally aspirated platform instead of chasing isolated peak figures.
Response, drivability and a calibration matched to the exact lightweight platform.
The 2003-2013 MZR generations and their market-specific ECUs require direct verification. The 1.3L Skyactiv-G arrived during the final MZR generation and can overlap by market and model year. The 1.5L Skyactiv-G and Skyactiv-D belong to the 2014 and newer generation. The 2.0L Skyactiv-G is restricted to selected markets and model years.
Identify whether the car is a Mazda2, Demio or Toyota iA and state its market.
Separate MZR, Skyactiv-G and Skyactiv-D engines before requesting ECU support.
Compare the installed thermostat design before ordering cooling parts.
Use modifications that suit a light naturally aspirated platform instead of chasing isolated peak figures.
Build the calibration around clean response, predictable part-throttle behavior and the fuel actually used.
Reviewed by Justin Freeman · Last reviewed August 2026 · Final support depends on the exact ECU and vehicle specification.