Welcome to the worst kept secret in the Spec Miata world
Custom spec Miata ECU for early models. And yes, all the front runners are doing it
We remove the ROM chip, replace the factory ROM file with ours, then replace the chip with an eye towards making the ecu look stock so you do not get caught!
while we do not condone cheating, we offer this service for folks that are running against others that may already be running a re flashed ECU.
Please understand you do this at your own risk!