The world's most powerful F10 M5 / S63TU currently stands at 678 wheel horsepower thanks to methanol injection
So you know those people who say meth is bad? No not high school guidance counselors those people on automotive forums who try to scare you away from methanol injection. Try to argue methanol is bad when the results you are about to see show the BMW S63TU 4.4 liter direct injected twin turbo V8 loving the stuff. The octane benefit can not be denied and the reality is a proper meth system with failsafes makes for a motor that resists detonation to a greater degree than it would on pump gas making it safer.
What does methanol do for the F10 M5 and S63TU? Oh, it just bumps the output to 678 wheel horsepower on a Dynojet in STD correction. Torque goes to 641 lb-ft at the wheels. The 678 peak wheel horsepower figure comes with a 628 peak lb-ft of torque reading.
Regardless, compare these results to what was achieved without methanol injection
. The octane bump is allowing a timing increase that increases output by roughly ~40 wheel horsepower. Peak torque does not increase by much although the area under the curve and the top end definitely does.
Meth is good for you.