Hello Sifus,I'm new here and planing to buy a BMW E46 either 318 or 325.Now what I want to know is what is japan spec?Any different between japan and local model? Why those japan spec sellling quite cheap?Any spec different or minimum accesorries ??Another things is what is STEPTRONIC,VALVETRONIC,DOUBLE VENOS???which one better and what are the different. I've notice that those with double vanos are much more exepensive? All also running on same size of engine capacity either 2.0 or 2.5 or maybe 2.8? but why some install with those STEPTRONIC,VALVETRONIC,DOUBLE VENOS???Please advise so that I won't regret buying my BMW...heard alot bad thing bout fixing and repairing BMW scared......charges $$$ also heavy...thanks