BMW M106
Encyclopedia
The BMW M106 motor replaced the BMW M102
BMW M102
The BMW M102 is an I6 turbocharged piston engine used in the E23 BMW 745i. At 3.2 L, the M102 produced ....

 motor. The addition of Bosch
Robert Bosch GmbH
Robert Bosch GmbH is a multinational engineering and electronics company headquartered in Gerlingen, near Stuttgart, Germany. It is the world's largest supplier of automotive components...

 Motronic engine management and an increased displacement to 3.4 liters produced the same output power as the M102 at lower RPM and with better fuel economy
Fuel economy in automobiles
Fuel usage in automobiles refers to the fuel efficiency relationship between distance traveled by an automobile and the amount of fuel consumed....

, and at only 6 psi vs. the M102 boost pressure of 10 psi. The M106 motor was used to power the 745i E23 until its end of production in 1986.
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