The custom ECU that Anthony has created for his Mazda MX-5 (a Miata for those in North America) is based on the PIC18F46K80 microcontroller, and there are actually two units involved.
It seems that Yellow Sac spiders really, really love Mazda. Three years after Mazda recalled ... A reflash of the ECU is required that "[changes] the logic behind how the car purges the charcoal ...
The issue rests with Mazda's new i-ELOOP regenerative braking system. Apparently there's a problem with the ECU program that monitors whether a capacitor in the regen system is working.