After the recruitment of Blood Reaping's Eduardo Guevara, Impiety recorded the eight tracks of their fourth album, Paramount Evil, at Ambox Studios in 2004. Reception was again positive and further touring ensued, including the nine-date Mexican Assault Tour in August 2004 and a five-date Asian Desecration Tour during December 2004 – January 2005. Following the cancellation of a number of European tours in 2004 and 2005, Shyaithan was forced to call an end to his Mexican alliance in mid-2006 owing to the costs associated with the large distances prohibiting rehearsing, recording and playing live. A new Asian line-up consisting of Shyaithan, Arbitrary Element's Tremor (drums), Dusk's Iron Shaikh (bass) and Absence of the Sacred's Mike Priest (guitars) was brought together and resulted in the Tormentors of Tijuana live album on Japan's cult Heavy Metal Super Star Records (2007) and the studio effort Formidonis Nex Cultus, once again for Agonia.
