Installed but unused.....if you have a tune on your car, chances are this gauge will NOT function properly. some tunes take control of the OBD and this gauge will put out garbage. However, if you don't, it's a great little unit. This is the full vent and gauge combined, includes all parts, for left hand placement. boost sensor also included, although that is pretty much just a length of tubing. more info on the manufacturer's website.....
http://www.p3cars.com/bmw-z-series/p...tal-interface/