Hey I noticed on one of your threads you mentioned there is a hidden digital tach on the car? Is that only on the 545s or 550s or on all e60s and if so where is this?

 

Beyond the cars you mention and the 7ers, I am not positive about which cars it "is on." My bet is that it is on at least all 5's, 6's, and 7's. Search on Znod. Eventually, you will find some of my posts having to do with tranny and hidden menu isses. My recollection is that the tranny thread you are looking for is different than the one I posted about any number of times. Still, you should find my post informative on "how the Step" works issues.