Gemballa is a tuning company based in Leonberg near Stuttgart, Germany, which was founded by, and named after, Uwe Gemballa in 1981. They provided aftermarket parts mainly for Porsche. In May 2010, the Gemballa factory was seized by German authorities and shut down following the disappearance of Uwe Gemballa who was later found dead. CEO Andreas Schwarz and investor Steffen Korbach were able to buy the brand rights and name rights from Gemballa in August 2010 under the new name GEMBALLA GmbH.
A 600 hp (450 kW) Gemballa model held the lap record for road cars at the Nürburgring in the late 1990s once, and again in 2001 when Wolfgang Kaufmann lowered it to 7:32,52 min. It was since beaten by a Porsche Carrera GT, by less than a second.
Notable Gemballa cars
A Gemballa GTR 650 Evo
A Gemballa tuned Porsche 996 Turbo
Porsche Cayenne tuned by Gemballa, pictured in London
Based on a Porsche Carrera GT, Gemballa produced the Mirage GT. Rumors suggested that when the car was produced it would have upwards of 800 horsepower (600 kW); however, the Mirage GT’s only performance modification is an exhaust system which boosts power to 645 hp (481 kW). At that time, company owner Uwe Gemballa said that a twin-turbo version of the Porsche Supercar was in the works. Modified Luxury & Exotics magazine described the car as “one of the finest automobiles we’ve ever featured.”
Gemballa Avalanche GTR800 EVO-R is a car based on the 911 (997) GT2. Like the title suggests, it produces about 800 bhp (600 kW) thanks to two turbochargers and highly modified engine components. There are pictures and information released at www.gemballa.com, the Gemballa GmbH website.
Gemballa also has a modification based on the Porsche Cayenne Turbo. This produces around 750 brake horsepower. The modification is called GT 750 Aero 3. This modification is also available for the Cayenne’s predecessor 955 model. The tune-up kit features exterior modification to enhance aerodynamic performance. Engine tuning is carried through revised turbochargers, coolers (oil and pressurized air IC) and a large collection of engine components including pistons and seals.
The Gemballa MIG-U1 is based on the Ferrari Enzo, for a limited numbers. It is a custom made car for Mustafa and Ilyas Galadari from Dubai: Their initials form the Name “MIG”. 
The 2011 Gemballa Mistrale, based on the Porsche Panamera Turbo, has 721 hp. Only 30 will be built.
In 2012, due to homologation rules, Gemballa built two versions of McLaren MP4-12C, including one road-going model and one GT3 race version (under Gemballa Racing division label) destined for FIA GT3 European Championship.