• Buckhead Imports tuned X5M S63 twin turbo V8 dyno results - Peak torque gain of 122 pound-feet at the wheels

      It is well established at this point that the new direct injected twin turbo V8 engines from the major German auto manufacturers respond very well to modifications. Here is yet another example with a dyno tuned E70 X5M whose S63 V8 shows some major torque gains. Keep in mind the E70 X5M and E71 X6M have the S63 V8 and not the updated S63TU V8 seen in the F10 M5. This motor seems to show more tune only torque gains as there is more room to raise boost having 17 psi stock versus 22 psi stock and higher compression for the S63TU.


      At about 2800 rpm the X5M shows 122 pound-feet of torque at the wheels over the stock tune. That is an absolutely massive torque gain from just an ECU tune. Peak torque rises to 502 pound-feet of the wheels over 401 at the wheels stock for a gain just over 100 pound-feet. The peak horsepower figure goes to 386 at the wheels from 359 stock. Not a huge horsepower gain but this one of those times where the torque graph through the rpm curve tells the story showing large gains before the torque starts to drop off toward redline.

      Keep in mind these are Dyno Dynamics numbers. The baseline shows comparatively low peak horsepower and torque figures versus say something like an all wheel drive Dynojet. This is why the Dyno Dynamics has the heartbreaker reputation as when it is not set to come crazy correction factors the numbers tend to be lower than most other popular dynamometers. All dynos are not created equal but what you should focus on is not the peak numbers but the delta here.

      This article was originally published in forum thread: Buckhead Imports tuned X5M S63 twin turbo V8 dyno results - Peak torque gain of 122 pound-feet at the wheels started by Sticky View original post
      Comments 16 Comments
      1. boostedmaserati's Avatar
        boostedmaserati -
        That is a massive torque gain indeed, must not fap
      1. onisyndicate's Avatar
        onisyndicate -
        That is awesome. I wonder how much that extra 100 wtrq will help with launch, 60' and all around fun!
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by onisyndicate Click here to enlarge
        That is awesome. I wonder how much that extra 100 wtrq will help with launch, 60' and all around fun!
        Tremendously.

        I've been in a tuned one. It definitely pulls down low. Slows down pretty quick but it's impressive how quickly that much mass moves.
      1. deemo319's Avatar
        deemo319 -
        Very nice torque gain.
      1. rdeterman's Avatar
        rdeterman -
        Id love to daily drive one of those!
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by rdeterman Click here to enlarge
        Id love to daily drive one of those!
        Perfectly daily and it can tow basically anything.
      1. Puerto Rican 335d's Avatar
        Puerto Rican 335d -
        STICKY sheit it looks like a DIESEL torque in that engine WOW!!
      1. 2swoosh's Avatar
        2swoosh -
        what's the towing capacity ?
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by 2swoosh Click here to enlarge
        what's the towing capacity ?
        Roughly 6600 pounds.
      1. Iskinner67's Avatar
        Iskinner67 -
        No idea it only put 359 to the wheels stock..
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Iskinner67 Click here to enlarge
        No idea it only put 359 to the wheels stock..
        That's a Dyno Dynamics...
      1. Nr1's Avatar
        Nr1 -
        Wath do day use to tune this car.
      1. Nr1's Avatar
        Nr1 -
        ????????
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Nr1 Click here to enlarge
        Wath do day use to tune this car.
        What do you mean? They flash dyno tune it.
      1. Nr1's Avatar
        Nr1 -
        I wonder wath kind off equipment is used?
        Vat kind of equipment is used to tune all dise new bmw turbo gasoline engines?

        The 5 series and the 3 series x series all with turbo gasoline engine 4,6 and 8 syl ???
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Nr1 Click here to enlarge
        I wonder wath kind off equipment is used?
        Vat kind of equipment is used to tune all dise new bmw turbo gasoline engines?

        The 5 series and the 3 series x series all with turbo gasoline engine 4,6 and 8 syl ???
        I think we're having a language barrier issue here but they connect to the ECU and are able to flash it. I'm not sure who's particular cables or what tuning system they are using other than they have the ability to flash.