Are there any ECU (PCM) upgrades for the Protegé?
Piggy back systems are available to wire in to a stock ECU such as an APEXi S-AFC. These systems will not work effectively due to Mazda’s ECU designs. At normal partial throttle operations, the AFC units will7 successfully fool the ECU to supply a different air/fuel mixture. However, at full throttle, the ECU has it’s own presets to override whatever input data is sent. The only solution to this is to get a complete aftermarket ECU replacement, such as an Haltech. Which is the ideal ECU for the BPT engine.
