Hi,
Install procedure is straight, remove small, black cover between steering and tacho, remove two screws,
pull tacho, remove green&blue plugs from tacho and put them directly into the VFIZ computer,
then similar plugs but outgoing from VFIZ insert into tacho,
next insert VFIZ behind center console,
insert tacho bac, install two screews, put small cover back.
I think that all … so it is about 15minutes.
Cost depends from it how extensive version is build, it about:
500$ (profi version, faster screen updates, with external EGT support, open-ceremony, reading and clearing dtcs, and more…)
there is also cheap version 250$ (almost all features but without open ceremony, slower screen updates, w/o clearing dtc and coding…)
Open ceremony works in b6 & b7, no need to make additional steps then just install of VFIZ