Wagner Lipnharski <wagnerl@EARTHLINK.NET> wrote:
> Other point:  I read in some sport car's magazine, about a device that
> reprogram your car's engine computer to increase efficience from 10 to
> 30% and also saves fuel.  Ok, they say it reprograms the computer much
> better than the factory does... let's see... it means that my car's
> manufacturer did intentionally a bad programming in by car's engine
> computer? and that they could do it better today and save gas, but they
> choose not to do?  it means I can sue them, right?  we go back to the
> ridiculous discussion about "When we release the new version we don't
> care (and we will not be responsible) anymore for the previous one..."

No, it means that their first priority was emissions (required by law), and
that their second priority was fuel economy (no legal minimum, although if
you fall below a certain level, there is a "gas guzzler" tax).

Or did the magazine claim that the car would still meet emissions
requirements?

There are many other factors that may be involved also, such as temperature
(of the engine, and ambient), wear, etc.  It's not as simple a decision as
"let's make the engine inefficient to screw the customer".  What motivation
would they have for that?