On February 24, 2014, it was announced that Doap Nixon was working on his fourth studio album, titled
Sour Diesel 2, a sequel to his debut album
Sour Diesel. It was confirmed he was working on a single called "Prison Rap" which was said to be featuring
Sean Price. The album was released on June 20, 2019, after being in production for four years. It featured vocals from Army of the Pharaoh members Vinnie Paz,
Lawrence Arnell,
Reef the Lost Cauze, and
Planetary, as well as vocals from Sean Price and
Good Money. He released the music video for the third single of the album,
Philly Streets in August 10, 2019. Although the album was originally supposed to feature King Magnetic, his verses were removed from the album at the request of Vinnie Paz. == Controversy ==