I got one in my E36 the day I was driving around just before Dutton Rally one year. Just took it to the Spotswood exhaust place, got tested, passed and went on my way.
.: 2010 E71 X6M - stock, daily driver, towcar :.
.: 2008 E92 M3 - 6MT, Carbon Roof, Eibach Springs, Megan Axle Back exhaust :.
.: 1997 E36 323i Frankenstein - too much to list, track whore, stripped, caged, MoTeC, S85B50 :.