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    • BMW F10 M5 severely underrated - Dyno shows 527 rear wheel horsepower SAE on a dynojet completely stock

      We knew the upgraded S63tu (technical update) Twin Turbo 4.4 liter V8 in the F10 M5 would be stronger than the standard S63 Twin Turbo V8 4.4 liter units in the X5M and X6M even accusing BMW of sandbagging. We just did not think it would be this much stronger. We first reported on the differences between the S63 V8's in the M SUV's and the F10 M5 in June of last year and the M5 S63tu V8 has higher compression at 10.0:1 versus 9.3:1 and runs more boost at 22 psi versus 17 psi for the SUV's.

      Well, the end result is 527 rear wheel horsepower completely stock on pump gas. This dyno comes to us courtesy of our Premier Vendor IND-Distribution whom we thank for sharing it with us.

      To put this power in perspective, the X5M and X6M put down 456 all wheel horsepower stock on 93 octane in SAE on a dynojet. So the M5 is much, much stronger partially due to routing the power to the rear wheels with a dual clutch transmission versus all four with an automatic and also due to more boost with higher compression.

      For those who like to calculate drivetrain losses, the M5 is rated at 560 horsepower stock. That would put the drivetrain losses at 6%. Using the traditional dynojet standard of 15% the rear wheel horsepower should be at 476. BMW is underrating the new turbo motors and especially the M motors considerably. We are definitely glad they are over-delivering.


      This article was originally published in forum thread: BMW F10 M5 severely underrated - Dyno shows 527 rear wheel horsepower SAE on a dynojet compeltely stock started by Sticky View original post
      Comments 43 Comments
      1. Brey335i's Avatar
        Brey335i -
        Time to stick the S63tu in an M3 and wipe the floor with some competition.
      1. HoozyerdaddyC63's Avatar
        HoozyerdaddyC63 -
        Click here to enlarge Originally Posted by TZ04XJR Click here to enlarge
        Damn... What a freak out the box Click here to enlarge

        So S63tu or M157?? I don't know what's in my future.. Either way I'm just going cougar hunting immediately to round up a sponsor to bankroll my new beast! haha Click here to enlarge
        Great idea! Click here to enlarge
      1. Yukohama's Avatar
        Yukohama -
        well damn. Those are some solid numbers. I wonder if it'd be possible (space contraints?) to upgrade the turbos?
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Yukohama Click here to enlarge
        well damn. Those are some solid numbers. I wonder if it'd be possible (space contraints?) to upgrade the turbos?
        Considering they are top mounted, absolutely.
      1. Yukohama's Avatar
        Yukohama -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        Considering they are top mounted, absolutely.
        Now those will be beasts.
      1. Sorena's Avatar
        Sorena -
        Damn!
      1. Remonster's Avatar
        Remonster -
        Awesome! I have a friend in Germany (European Delivery) who just picked up his F10 M5. He took it to the Nürburgring yesterday and says it feels way, way faster than his E60 M5 which had intakes, full exhaust including headers, ECU tune, transmission tune and some other minor mods.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Remonster Click here to enlarge
        Awesome! I have a friend in Germany (European Delivery) who just picked up his F10 M5. He took it to the Nürburgring yesterday and says it feels way, way faster than his E60 M5 which had intakes, full exhaust including headers, ECU tune, transmission tune and some other minor mods.
        He's feeling that turbo torque.
      1. Sorena's Avatar
        Sorena -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        I'm concerned this motor won't have too much room to play, looks BMW went pretty aggressive to make a point. Message received.
        Look how nicely the turbos are holding it together on up top. They are far from being maxed out.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Sorena Click here to enlarge
        Look how nicely the turbos are holding it together on up top. They are far from being maxed out.
        I don't don't know, 22 psi and the torque is dropping. It certainly doesn't match their old M5 curves.
      1. Sorena's Avatar
        Sorena -
        @Nate@IND what gear it is?
      1. Sorena's Avatar
        Sorena -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        I don't don't know, 22 psi and the torque is dropping. It certainly doesn't match their old M5 curves.
        Oh yeah that's for certain that no matter what they can't match the beautiful curve of S85.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Sorena Click here to enlarge
        Oh yeah that's for certain that no matter what they can't match the beautiful curve of S85.
        We'll see what tunes bring to the table.
      1. Sorena's Avatar
        Sorena -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        We'll see what tunes bring to the table.
        I want something like the Omar tuned N63. No boost bombing in the mid range to make huge numbers.

        I hate to say this, but all of a sudden the M6 has grown on me badly. Decisions...
      1. fast4door's Avatar
        fast4door -
        damn 527whp stock?..now thats impressive, cant wait to see what these do modded..and cant wait to get my hands on one in a couple years..im still enjoying my E60 Click here to enlarge
      1. Remonster's Avatar
        Remonster -
        Click here to enlarge Originally Posted by Sorena Click here to enlarge
        @Nate@IND what gear it is?
        They said somewhere else (one of the other forums, don't remember) that 4th gear was inconsistent so they used 3rd gear for that run.
      1. Sorena's Avatar
        Sorena -
        Click here to enlarge Originally Posted by Remonster Click here to enlarge
        They said somewhere else (one of the other forums, don't remember) that 4th gear was inconsistent so they used 3rd gear for that run.
        Wonder why they didn't do it in 5th. It's 1:1.
      1. Sticky's Avatar
        Sticky -
        You know guys, sometimes I just can't win.

        Autoblog cited BimmerBoost as a source but wrote "Bimmerpost" in the article text. FML, seriously.

        Click here to enlarge Originally Posted by Autoblog Click here to enlarge
        we definitely saw this coming. BimmerPost recently got a hold of engine dyno run for the new M5, and is reporting that the car's twin-turbo V8 is "severely" underrated.

        The idea of BMW underrating its engine outputs is nothing new. Earlier this year, the new 328i show some impressive numbers of its own.


        News Source: BimmerBoost.com

      1. Sorena's Avatar
        Sorena -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        You know guys, sometimes I just can't win.

        Autoblog cited BimmerBoost as a source but wrote "Bimmerpost" in the article text. FML, seriously.


        [/FONT][/COLOR]
        Seriously LOL. Talk about a big typo fail.
      1. Sticky's Avatar
        Sticky -
        I want to hit my head against a $#@!ing wall.