The M30B30 engine is the 3.0-liter (2986 cc) version of the M30 engine. The fuel injected version of the 2,986 cc (182.2 cu in) M30 debuted in 1971 in the E9 3.0 CSi and initially used the Bosch D-Jetronic mechanical fuel injection system. In 1976, the fuel injection system was upgraded to Bosch L-Jetronic electronic …
The first to appear was a modification of the BMW 2800CS with a 2.8-liter in-line six-cylinder engine with a power of 170 hp. In 1971, this engine was replaced by a power unit with a volume increased to 3 liters: on the BMW 3.0CS version, it developed 180 hp, and on the 3.0CSi modification with an injector, 200 hp. The lightweight 3.0CSL coupe was created especially for the homologation of racing cars in the European Touring Car Championship. At the end of the conveyor life, a less powerful version 2.5CS (150 hp) appeared, which became the answer to the fuel crisis and high gasoline prices.
In total, until 1975, 30.5 thousand coupes were made at the Karmann enterprise, which produced these cars.