I think the jb4 will work with the gv80. I don't see why it wouldn't. but supporting
mods might need to be created for more power. like the burger tuning intakes. they were made for the
stinger and work with the g70 but as far as I know they don't fit the g80. so there will probably need to be some modification to that to work.
so my guess is an easy 50hp or so with only the jb4 but it might take some time for supporting
mods to be made to use stronger maps. the jb4 works will the g70, g80, g90. so I don't see why the gv70 or gv80 would be any different.
if enough people are interested the
mods will come. this discussion is a good start.