I called Mazda corporate and discussed the information I'd read here.

Here's what I asked them:

Is it true that there was a last minute EPA regulation hitch that caused Mazda to reprogram the ECU to run richer, and thereby decrease horsepower and fuel economy?

Here was the response:

The variance in horsepower from the original 250 to the current 238 was simply the product of a technical miscommunication between the engineering department in Japan and local publications. There was no ECU reprogramming and the car functions entirely as intended.

This response came from a senior technical advisor at Mazda corporate who I was transferred to when I asked a technical question.

Interesting, isn't it?

Maybe you should of then asked what the port campaign was about.

interesting

you posted this same thing in the discussion forum. read my responses there. this one will be closed