.To adjust the camshafts.
.Ensures correct setting of the Hall sensor wheel.
.suitable for cars with 4.2 liter V8 engines:
   AUDI A6 (05-06), A8 (04-06), Quattro (03-05), S4 (04-09)
   VW Phaeton (04-06)
   with engine codes:
   BNK - BFM - BGK - BAS - BHF - BGH