what is a "Digifast Chip from vw pilot on the tex"? i'm about to do a swap and this is the only thing i can't figure out from your post. everything else is crystal clear. thanks for posting this in such detail. it's going to make this little dream of mine come true finally, a hot little 16v (from my 87) into a beautiful 91. i can't wait to post pics of it when it's done.