More power for your Porsche or BMW with no waiting. Who doesn’t love the idea of extracting more power from their Porsche or BMW sports cars? With nearly all of the Porsche and BMW lineups having some form of turbocharging, big power gains can be realized quite easily and safely with a performance tune. The base Porsche 911 Carrera can be tuned to nearly Porsche 911 Turbo levels of power quite easily, and because they share the same basic engine architecture, the risk to internal components is minimal. Reputable tunes from M Engineering, Softronic, Dinan, and APR can transform your Porsche, BMW, or Audi into a fire-breathing monster. Some tunes, such as those from APR, retain emissions compliance in all 50 states, making them especially attractive to people who live in places like Atlanta and the surrounding suburbs of Roswell and Alpharetta who must maintain emissions compliance in Fulton County, Cobb County, and Forsyth County.