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    • RaceChip GTS Black piggyback gets over 600 horsepower out of the BMW F98 X4M S58 - Before/after dyno and 100-200 kph time

      RaceChip posted some S58 tuning data which is much appreciated as we all eagerly anticipate the introduction of the BMW G80 M3. The S58 drivetrain of the G80 M3 is previewed essentially in the F97 X3M and F98 XM SUV's and we are already seeing solid tuning numbers. Check out the dyno and acceleration data from RaceChip below.


      Here is the overlay stock and tuned from the MAHA:


      The tuned curves mirror the factory power delivery pretty much identically. There just is more torque everywhere.

      Stock figures:


      Tuned figures and graph:


      Now, the MAHA is pretty conservative but go by the delta. The increase is quite nice. Dynojet figures from the S58 are much, much higher.

      Let's not play the 'how this dyno reads' game and instead look at before and after acceleration figures.

      100-200 kph stock 11.43:


      100-200 kph tuned 9.26:


      A nice improvement.


      Is it preferable to the BMS JB4 though?


      This article was originally published in forum thread: RaceChip GTS Black piggyback gets over 600 horsepower out of the BMW F98 X4M S58 - Before/after dyno and 100-200 kph time started by Sticky View original post
      Comments 16 Comments
      1. Eleventeen's Avatar
        Eleventeen -
        I assume Race Chip is a piggyback? Based on the fact that the power curve is almost identical to stock, it seems like they just added a static amount of boost througout the rev range. Simple but effective, apparently.
      1. Sticky2's Avatar
        Sticky2 -
        Click here to enlarge Originally Posted by Eleventeen Click here to enlarge
        I assume Race Chip is a piggyback? Based on the fact that the power curve is almost identical to stock, it seems like they just added a static amount of boost througout the rev range. Simple but effective, apparently.
        It says piggyback in the title...
      1. Eleventeen's Avatar
        Eleventeen -
        Click here to enlarge Originally Posted by Sticky2 Click here to enlarge
        It says piggyback in the title...
        Yep, there it is.

        Iím still amazed these piggybacks add so much boost on stock timing without scattering parts everywhere.
      1. 135idct's Avatar
        135idct -
        just wait for full flash tune Click here to enlarge
      1. RobNyc's Avatar
        RobNyc -
        Click here to enlarge Originally Posted by 135idct Click here to enlarge
        just wait for full flash tune Click here to enlarge
        Same Click here to enlarge
      1. Sticky's Avatar
        Sticky -
        I just want to see what quality hybrids do on this thing. ~700 awhp?
      1. 335iCooperS's Avatar
        335iCooperS -
        Aren’t these dragy numbers disappointing? 0-200kmp/h in almost 14 seconds? Didn’t Bms do 10.8 in 1/4 mile with 125+ trap speed, which is 200km/ph+. BMS used an e40 blend but I expect that race chip used 102 eu octane for their testing.

        IND clocked a 11.8 -116.3mile stock.
      1. Payam@BMS's Avatar
        Payam@BMS -
        Click here to enlarge Originally Posted by 335iCooperS Click here to enlarge
        Aren’t these dragy numbers disappointing? 0-200kmp/h in almost 14 seconds? Didn’t Bms do 10.8 in 1/4 mile with 125+ trap speed, which is 200km/ph+. BMS used an e40 blend but I expect that race chip used 102 eu octane for their testing.

        IND clocked a 11.8 -116.3mile stock.
        We're doing something right Click here to enlarge
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by 335iCooperS Click here to enlarge
        Aren’t these dragy numbers disappointing?
        No. They just don't seem to be as fast as BMS.
      1. Eleventeen's Avatar
        Eleventeen -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        No. They just don't seem to be as fast as BMS.
        Yeah, letís be honest, there are more expensive piggybacks out there from companies that have a high-end appeal, but BMS has them all beat. They have spent so much time doing R&D on their own cars, as well as customer beta testing which has lead to a very refined and feature packed product. Even back when BMS was building plastic boxes with no bluetooth comms, they developed external wastegate control for some random guy that built a single turbo N54 in his driveway. It only took Terry 2 or 3 firmware revisions over the course of 2 days to dial in what probably took Vishnu weeks to develop for their single turbo logic.
      1. Fuhrmann's Avatar
        Fuhrmann -
        Click here to enlarge Originally Posted by 135idct Click here to enlarge
        just wait for full flash tune Click here to enlarge
        It already happend in Germany. 6XXHP/8XXNM doing stable 7,3 100-200Km/h.

        The Hybridversion for 750+ is on way, too. Click here to enlarge
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Fuhrmann Click here to enlarge
        It already happend in Germany. 6XXHP/8XXNM doing stable 7,3 100-200Km/h.
        By whom?
      1. Fuhrmann's Avatar
        Fuhrmann -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        By whom?
        Maybe end of the month the results will be "official" until then i must be quiet.Click here to enlarge
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Fuhrmann Click here to enlarge
        Maybe end of the month the results will be "official" until then i must be quiet.Click here to enlarge
        Oh come on give me a hint... it's stuff like this that gives me an edge over other sites.
      1. Fuhrmann's Avatar
        Fuhrmann -
        Wouldn`t help, as its someone fly under the radar as he often develope for others....Once its official i`ll drop you a message with charts...
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Fuhrmann Click here to enlarge
        Once its official i`ll drop you a message with charts...
        Thanks. Just sucks I won't break the news first.