[mpgmike]

In casual conversation with a Ford engineer, he told me that life would be so much easier if the EPA just told us (Ford) to meet these specific emissions requirements, regardless of how you do it. Instead, they tell us what emissions levels are acceptable, but also what type catalyst we must use, what fuel delivery system strategies are acceptable, that we must choose from their approved ECU manufacturers, and the list endlessly goes on an on.

I will stake my reputation, my life, and all hope for future happiness on the proven fact that engine combustion efficiency ABSOLUTELY CAN BE IMPROVED WITHOUT INCREASING EMISSIONS; perhaps not with the limited list of approved technologies provided by the EPA to OEMs, though.