Quote:
Originally Posted by Obrfso
So basically there r 2 things which differs euro spec to USA spec. first thing is because of USA regulation, the USA spec m3 has got a sensor which takes out the air from the tank. If u change the soft to European it will show a mistake because the sensor doesn't exsist in the European spec and after driving the pressure increases and the car might stop because of air in the filter, not petrol.. Secondly the cats are different and as a result the USA spec gives more fuel to injection... Another us regulation... I talked with the Guy from BMW motorsport department in Munich which only looks at m powers... Did someone know that?
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If you are talking about the fuel tank vapor leak check you are wrong. Both US- and Eurpoean-spec cars are equipped with charcoal canisters and the leak check pump.
Wrong also on the catalytic converters, they are the same, I mean exactly the same as in the same BMW part number.
This verified through BMW's ETK for an 11/2009 build BMW E92 M3 Coupe.