I got my car back from STE last week with their Performance Parameters Display unit. It is a very clean gauge system that shows a lot of readings from the can bus system and information sent straight to the instrument cluster. Earlier this year Axel started a thread for the B7 kit but STE had not gotten a B6 to play with until mine. There are a few different things from the B7s to the B6s like the pin assignments of the connectors.
The big thing that I like about this system is that it shows oil temperature.
http://i284.photobucket.com/albums/ll37/Jimmybones777/STEPPDinstall7_zps0c57249c.jpg
Since I am JHM supercharged I hooked up a vacuum line to the unit so that I can see boost pressure when I get on it. During one of the timed runs that we did from 60 mph to 90 mph I saw 6.2 PSI at 6.9K rpms with the boost recall feature. Here is a picture with the engine sitting at idle:
http://i284.photobucket.com/albums/ll37/Jimmybones777/STEPPDinstall6_zps491d153a.jpg
As I said before, the install in very clean. With the PPD unit mounting behind the lower shelf.
http://i284.photobucket.com/albums/ll37/Jimmybones777/STEPPDinstall2_zps9d685da3.jpg
Along with in the engine compartment once I put the covers back on.
http://i284.photobucket.com/albums/ll37/Jimmybones777/STEPPDinstall4_zpsab0a4b97.jpg
The unit in my car shows boost pressure/vacuum, air fuel ratio, oil temperature, coolant temperature, intake air temperature, battery voltage, timed runs (0-60, 60-90, and 60-130 I think), vehicle speed, injector duty cycle, mass air flow reading (grams per second), and load.
The intake air temperature will be very helpful for when I go to the drag strip and am sitting in the staging lanes. It is cool to watch the intake air temperature reading change from driving down the highway to sitting in traffic and back. It gets down to ambient air temperature after a minute or two of driving but damn that thing can sky rocket when I am sitting in traffic for even short periods of time because these V8s run hot! Also the speedometer is a bit optimistic. I have different tires than stock but I have noticed it is 3-4 mph off up to about 40 mph and then from 5-6 mph off when above 40 mph.