I disagree that the 280 HP engine will make more power on 93. The engine electronics would have to allow changes to cam timing, etc. They rated it for regular unleaded and I’d bet they did it on purpose to differentiate it from the S engine.
Here is the info given to the press reviewers which confirms my prediction. 93 octane does not allow the base engine to make any additional power. if both are run on 87 octane there is still a 39 HP and 37 lb-ft difference between the engines.My last post in this thread:
I stand by my original statement. I highly doubt that Mazda's engine development team overlooked the potential of the base 280 HP engine and it can actually make more than that. They used the term "UP TO 340 HP" when referring to the S model but forgot the UP TO part on the base model?
Could it make more on 93? Probably, but only if the engine electronics (the "tune") allows it.
They made them different purposely to differentiate the models.