The 2013 F10 M5 with its 4.4L V8 S63Tu turbo engine has previously been shown to be underrated from the factory, which is BMW’s habit with its official quote power figures.
The latest results showing this come from iND who have just begun performance testing on their F10 M5. The result was 527 RWHP (rear wheel horsepower) on a totally stock F10 M5 running on pump gas and dyno’d on a dynojet. This represents just a 6% drivetrain loss.
The M5’s S63tu V8 runs a higher compression at 10.0:1 (@ 22 PSI), compared to the X5M/X6M S63 engine’s 9.3:1 (@ 17 PSI).
As announced yesterday, BMW’s N20, N54, S65, N18 engines have each picked a best engine award at the 2012 International Engine of the Year Awards [Full Award Results].
Here’s a brief overview of two of the technologies featured in most of the BMW engines available today - TwinPower Turbo and VALVETRONIC (variable valve timing) technology. Valvetronic was first introduced by BMW on the 316ti compact in 2001, and has since often been coupled with BMW’s double-VANOS.
Until 2012, no M model used Valvetronic, but instead continued to feature multiple throttle-bodied designs. The 2012 F10 M5 with its S63 engine is the first M model engine to utilize Valvetronic technology in lieu of the individual throttles found on its equivalents in the BMW X5 M and X6 M. The … CONTINUED