The format was launched prior to the Reggaeton phenomena, and subsequently did not have enough variety or promotional power to compete with crosstown heritage CHR/Rhythmic KDON-FM.

Notable Djs/Turntablist & Radio personalities of the former 97.9 En Fuego include the (SQRATCHAHOLIX) Alias, B-Klepto, Earwax, Neato, Romezee, & Fizzle.

In July 2005, the station switched again, this time picking up a franchised format, Mexico's Exa FM from MVS Radio.

The station featured a bilingual CHR/Rhythmic mix with Reggaeton, Mexican artists such as Fey and Moenia, and American hip-hop tracks.

Programming on the station was under the direction of OM Bernie Moody and consulted by Rene Roberts, Freeze was brought in as APD/MD.

In May 2013, KYZZ was purchased by Saul Levine, owner of country KKGO and classical KMZT in Los Angeles.

On July 31, 2013, sports KYZZ went silent and returned to the air with a classical music format on August 12, 2013.

[3] In June 2016, Mount Wilson FM Broadcasters sold the 97.9 frequency to the Educational Media Foundation.

The station changed its call sign again on April 17, 2017, to KARW and switched to EMF's Air 1 Christian rock format.