I am considering joining the club again with a 2006 Z4 Coupe 3.0SI, but I came across some information that suggest the n52 was "upgraded" in late 2006 to become the N52K...which if true means that was the engine in my 2007 coupe and I want that same engine
are there differences in the n52's in 2007 and 2008's vs 2006's?
