Thread: M5 dyno
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      11-13-2012, 10:10 AM   #1
motorsport_cat
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Drives: 2012 328i
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Hi everyone,

Lately I've been looking at dyno tests of the M5. Power at the wheels is at 527hp. If an estimated 15% of power is lost at the drivetrain, then the M5's 560hp engine is underrated by about 46hp!!! Does the M5's engine (S63Tu) actually produce 606hp?

If so,
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