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    • A90/MKV 2020 Supra B58 before and after results with BMS JB4 tune - 424 wheel horsepower

      Of course BMS (Burger Tuning) was not going to stay out of the Supra B58 tuning scene. They got their JB4 on and headed to the dyno to get some before and after numbers from a Dynojet on 91 octane pump fuel.


      Keep in mind the car also has a downpipe and intake:


      The JB4 sure has evolved and that curve looks great. Torque is picked up through the rev range with an especially nice chunk in the mid-range. Peak torque goes up by 91 lb-ft at the wheels.

      The Supra is benefitting from a bevy of tuning options with the JB4 offering its traditional value and features.

      This article was originally published in forum thread: A90/MKV 2020 Supra B58 before and after results with BMS JB4 tune - 424 wheel horsepower started by Sticky View original post
      Comments 13 Comments
      1. Eleventeen's Avatar
        Eleventeen -
        Wow, impressive results as usual with the JB4. Even right up near redline, there is a lot of additional power to be gained with the stock turbo. Looks like it picked up 60-70 WHP or so.
      1. chakita's Avatar
        chakita -
        Ok so I just emailed Burger to see if their tune with a Downpipe will take care of a possible cell light and and their answer was No. I have used Burger on almost all of my bmw's in the past with no issues from a cell light so what gives now?
      1. crapinternet's Avatar
        crapinternet -
        Click here to enlarge Originally Posted by chakita Click here to enlarge
        Ok so I just emailed Burger to see if their tune with a Downpipe will take care of a possible cell light and and their answer was No. I have used Burger on almost all of my bmw's in the past with no issues from a cell light so what gives now?
        They got in trouble with the EPA for defeating the emissions CEL on cars(At least Ithink that's the rumour I heard). The JB4 will still do that CEL clear if you live outside the good ol' USA, but not for residents. For a while you could use a older version of the app that didn't have the geo-location check to turn on/off the code clear feature.

        Not sure if thats an option on the JB4 used in the supra though.
      1. chakita's Avatar
        chakita -
        Hey thanks for the info, it's shame because who in their right mind isn't going to fully do a full bolt on on the new MK5. Looks like I'm going with a ecu tune then because I do not want a cell light..
      1. CobraMarty's Avatar
        CobraMarty -
        And the cat-less downpipe is illegal. Federal law. That's high stakes.
      1. chakita's Avatar
        chakita -
        We all are well aware of that but we still continue to mod our cars while we kill the envirnment , lol...
      1. Payam@BMS's Avatar
        Payam@BMS -
        Click here to enlarge Originally Posted by chakita Click here to enlarge
        Hey thanks for the info, it's shame because who in their right mind isn't going to fully do a full bolt on on the new MK5. Looks like I'm going with a ecu tune then because I do not want a cell light..
        You can put electrical tape over the CEL light Click here to enlarge
      1. chakita's Avatar
        chakita -
        MHD...
      1. Ando@BMS's Avatar
        Ando@BMS -
        Click here to enlarge Originally Posted by Payam@BMS Click here to enlarge
        You can put electrical tape over the CEL light Click here to enlarge
        We should make a custom sticker for that. lol CEL delete sticker
      1. Sticky's Avatar
        Sticky -
        Seriously though? No CEL solution from BMS?
      1. Terry@BMS's Avatar
        Terry@BMS -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        Seriously though? No CEL solution from BMS?
        No we've blocked it within the USA for years now for federal emissions compliance. Outside the USA no problem.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Terry@BMS Click here to enlarge
        No we've blocked it within the USA for years now for federal emissions compliance. Outside the USA no problem.
        Would you recommend a BEF for someone in the USA in this instance?
      1. Terry@BMS's Avatar
        Terry@BMS -
        I would suggest no one in the USA remove emissions equipment if the vehicle is not a dedicated race car.