quick vtr camshaft question

  1. #1
    i got a mate whos doing my cambelt hes done them all before and replaces std cams BUT hes never replaced std for a high lift cam

    does he just remove the old cam fit the new cam in its place and time it all up as std untill i get my vernier and get it remapped?

    or does it have to be fitted different?

    he thinks he just fits it as normal so its all timed up as standard untill i get it remapped and setup

    note, its a ph3 cam