hhmmm... Sa US lang naman sila strict pagdating sa emmissions eh, hindi sa europe... for example, yung mga Euro E36 M3's push 321hp, pero nung i-import nila sa US yung the same car, naiba yung mga specs and everything that it only pushed 240hp, that's so much weaker than the Euro version...
[SIZE=1]quote from[/SIZE]
http://www.answers.com/topic/bmw-m3
The first E36 M3 to be imported to the United States was the 1995 model, which received a 3.0 L engine with 240 hp (176 kW) and 305 N•m (225 ft·lbf) (S50B30US) and a different suspension. The reasons for the less powerful motor were largely due to excessive costs for the US market with the original engine and possible difficulty in getting the Euro engine to pass emission tests.