Video – BMW M-Division 4.4 V8 Engine

BMW unveiled their first M car powered by a turbocharged engine back in 2009. M Division S63 is a V8 4.4 liter twin-scroll engine delivering 555 horsepower at 6,000 rpm and 500 lb-ft of torque from 1,500 to 5,650 rpm. It uses the twin-scroll twin turbo technology with High Precision Direct Injection. By positioning the twin-scroll turbochargers together with the catalytic converters in the “V” section between the cylinders, it reduces the turbo lag and offers increased fuel efficiency. This video was released by BMW to give us more insight into the production and testing of this new engine:

[youtube]http://www.youtube.com/watch?v=yKmHIvwXtz8&feature=player_embedded[/youtube]

Current Spec for X5/6M:
Cylinders/valves 8/4
Capacity in ccm 4395 / Biturbo
Stroke/bore in mm 88.3/89.0
Max. output in kW/bhp at 1/min 408 (555)/6000
Max. torque in Nm at 1/min 680/3400