It's a piggyback. Better than emb imo. I ran one on the td04 I'm breaking, and on a swift gti I used to have. Only thing with 'em is mappers are less available than other piggyback units.
Lookin to run td04 on it an one I'd be lookin to get is sorta set for td04 setup tho prob need tweaked. Mite contact ecc see if they cud re map it to suit my setup etc. thx m8
PM me and we can negotiate