He was a self-made man, who rose from humble beginnings to become the owner of various agencies specializing in finances, tourism, and insurance, as well as a building company and a hotel chain.
Soon after becoming a president, he decided unilaterally to separate several team players from the main roster, including some iconic ones who had been part of the runner-up campaigns of the mid-1990s (e.g., Gustavo Barros Schelotto, Enzo Noce and Andrés Yllana),.
However, that temporary move soon became de facto permanent, after he refused to comply with the various reforms requested for the old stadium by the CoProSeDe, the provincial organization in charge of security at sporting venues.
After the end of Muñoz's mandate in 2007, the new management began finally the renovations; it is believed that Gimnasia y Esgrima La Plata should be able to use the old field some time during 2008.
In October 2006, at half-time during a match against Boca Juniors in La Plata, Muñoz appeared in the dressing rooms, requesting to be able to talk to the referee and voice a number of complaints.
Muñoz's tenure was also marked by the worst-ever defeat at a La Plata derby (a 0-7 fall against Estudiantes), as well as by the relegation of the once-powerful basketball team, following the withdrawal of strong financial support for this sport in the club.