The ERam, from the link in the original post, does work. It has been tested and dynoed by one CEGer to show good gains. I think average was 7HP/TQ and peak in the double digits. It produces 1psi of boost.
Frank McCoy aka Mod-deth aka Mid Life Crisis aka SVT Doood aka mcgainer is a SCAM ARTIST
Pre98 Zetec - Some Mods