I contacted Wintertuning. This is the response to my enquiry:
Originally Posted by Marcumac
Anyone have more info on this? I don't speak German and this sounds too good to be true. If it is, however, sign me up.
"The modification is only Software from 12 different engine maps, one of this
and the main part is the Valvetronic change! Continues about 3 hours €639
Include also Vmax."
(Not sure if “from 12 different engine maps” means that you can chose from one of 12 different mods. The conversion takes 3 hours and the cost is aprox $895. I live 120 miles from Forstern so I will visit them in the spring)
D -85659 Forstern
Tel. 08124/1001 Fax 08124/8894