• COBB Tuning AccessTUNER Race Self-Tuning Software for BMW N54 Available Now!



      COBB Tuning is proud to announce the release of AccessTUNER Race tuning software for AccessPORT equipped BMW N54-powered vehicles. The AccessPORT is the only hand-held OEM ECU flashing, managing and monitoring device available for N54 equipped BMWs, and when combined with our free AccessTUNER Race software, the result is a groundbreaking, end-user-tunable engine management system with all of the sophistication and drivability inherent in the factory BMW ECU.


      AccessTUNER provides control of vital engine parameters to the user, such as; VANOS (both requested and actual), ignition timing, wastegate duty cycle, fuel tables, torque limiters, throttle control, rev limiters, speed limiters and many more. Over 70 tables in the DME have been exposed and are editable through AccessTUNER, giving unprecedented control of the factory BMW engine management system. Customizable data monitors let the tuner choose which DME channels are monitored to see how tuning changes impact the behavior of the engine.


      The software's built-in data logging capability can capture data from over 70 channels from the DME, including; individual knock voltage for each cylinder, timing correction for each cylinder, VANOS requested and actual, wastegate duty cycle for each bank, 9 different boost related monitors and many more. Data can be recorded simultaneously from multiple monitors across the entire rev-range, allowing detailed data analysis after a dynamometer test.


      3-D graphical mapping gives the user a comprehensive view of across three axis to evaluate where performance can be maximized. An integral dashboard shows user-chosen gauges to be displayed during the tuning process. The BMW AccessTUNER Tuning Guide is a great reference to learn more about how the BMW N54 DME operates and how changes to tables will impact engine performance.


      Data Logging



      Fuel Table



      Load Target Table


      Ignition Timing Table



      The COBB Tuning Off-The-Shelf calibrations work as a great starting point for custom tunes, so tuning from scratch is not necessary. Users can modify OTS calibrations and create multiple maps to accommodate different bolt-on parts, turbo-upgrades, fuel types, throttle response, environments, fuel economy, etc. Once tuning is complete, all of the custom maps can be loaded onto the AccessPORT so you can be ready for any situation with just the push of a button. In addition, maps can be shared with other AccessPORT tuned BMW N54 enthusiasts. This allows more experienced tuners to help out those just getting started in tuning, and allows groups of self-tuners to work together to pool their knowledge and maximize gains for all.


      With the unmatched features and convenience of the AccessPORT, COBB Tuning's exceptional customer support, and the addition of our comprehensive new AccessTUNER Race custom-tuning software, the true power of BMW N54 engine tuning has just been placed into the hands of the enthusiast!


      To get your free copy of AccessTUNER Race tuning software, please fill out our AccessTUNER Race Download Request Form. An email will be sent to you with a download link within an hour of submitting the form.


      As always, if you have any questions about the AccessPORT and AccessTUNER, or any other COBB Tuning products, please call us at 866-922-3059. Get up-to-date product announcements, sneak-peeks of upcoming products, and the latest COBB Tuning news through our COBB Tuning Mailing List. You can always be a part of the latest conversations with COBB Tuning by tuning in to our our facebook.com/cobbtuning and twitter.com/cobbtuning pages.

      -Gary
      This article was originally published in forum thread: COBB Tuning AccessTUNER Race Self-Tuning Software for BMW N54 Available Now! started by COBB Tuning View original post
      Comments 103 Comments
      1. bigdnno98's Avatar
        bigdnno98 -
        Wow,nice Cobb. I wasn't sure if this was ever going to happen. Looks like I may be stacking a G5 and Cobb this winter. Hoping to have a set of RBs before the strip opens back up next spring.
      1. rader1's Avatar
        rader1 -
        Click here to enlarge Originally Posted by Skyhart Click here to enlarge
        Could be an intersting question, who wants a piece of that action? What's the projected over/under before somebody blows up?

        Seeing how there have been more than one "why is my car misfiring/running poorly, I'm only running Stage 2+ without appropriate mods because my mechanic buddy told me it's okay" threads...I'll pick 45 days before the first one goes. Anyone else?
        I just hope they know enough to know not to mess with something they know nothing about. I think the average e90poster may be too intimidated to just get in there and start tweaking anything they can click on.
      1. ATP's Avatar
        ATP -
        Click here to enlarge Originally Posted by rader1 Click here to enlarge
        I just hope they know enough to know not to mess with something they know nothing about. I think the average e90poster may be too intimidated to just get in there and start tweaking anything they can click on.
        I wouldn't count on that. I am sure they will read what other people have done, think they can get away with the same thing and then have major issues.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by vasillalov Click here to enlarge
        Reading from the Cobb documentation, I found an interesting piece of information. It appears that the N54 engine speed is regulated via the injectors and the ignition system.
        Is this something we didn't know earlier? Does make complete sense.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by ATP Click here to enlarge
        I wouldn't count on that. I am sure they will read what other people have done, think they can get away with the same thing and then have major issues.
        Why would novices even be messing with it? This should be for experienced users who want more control and adjust-ability. If anyone screws something up with this they have nobody to blame but themselves. People have been clamoring for it and now they have it. Those who don't know what they are doing should be on the sidelines or using Cobb's own maps.
      1. Skyhart's Avatar
        Skyhart -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        Why would novices even be messing with it? This should be for experienced users who want more control and adjust-ability. If anyone screws something up with this they have nobody to blame but themselves. People have been clamoring for it and now they have it. Those who don't know what they are doing should be on the sidelines or using Cobb's own maps.

        It would seem reasonable. But then again, why would somebody run the wrong map for the mods they have and actually post a question as to why they're having issues. ATR is great, but you can't police "stupid" and somebody is bound to test that. I would bet the average user won't have issues.
      1. vasillalov's Avatar
        vasillalov -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        Is this something we didn't know earlier? Does make complete sense.

        Well, to me it was interesting piece of information. I think only DI motors are this way. Regular port injection motor speed is increased by opening the throttle body.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Skyhart Click here to enlarge
        It would seem reasonable. But then again, why would somebody run the wrong map for the mods they have and actually post a question as to why they're having issues. ATR is great, but you can't police "stupid" and somebody is bound to test that. I would bet the average user won't have issues.
        If someone is stupid enough to mess with their motor without knowing what they are doing they earn everything that happens to them.
      1. dzenno@PTF's Avatar
        dzenno@PTF -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        If someone is stupid enough to mess with their motor without knowing what they are doing they earn everything that happens to them.
        That's said in a pretty harsh tone as many have learned by exactly that, trying things, including most if not all of our well respected tuners. Letting someone more knowledgable on the subject that has already seen many things work or not work is always a better idea of course.
      1. carcars's Avatar
        carcars -
        Click here to enlarge Originally Posted by bobS Click here to enlarge
        Is it realistic to think a shop with pro tune ability and some n54 experience could properly tune a RB powered car? I'm thinking of getting rb's this winter and would most likely go to a place like efi for tuning. When cobb says there are variations from car to car, that makes me nervous. I am not experienced enough to play with ATR yet. The last thing I want to do is spend money on a nice RB set up for the car to run horribly and have boost oscillations.
        then you should forget and JB4 cobb if you are thinking to run well rb turbos


        your way is a good electronica as, that take a little time but will be worth it I assure you friend ...
      1. rader1's Avatar
        rader1 -
        Click here to enlarge Originally Posted by dzenno Click here to enlarge
        That's said in a pretty harsh tone as many have learned by exactly that, trying things, including most if not all of our well respected tuners. Letting someone more knowledgable on the subject that has already seen many things work or not work is always a better idea of course.
        (I tried to positively rep this one, not enough rep myself)
        Exactly, as long as someone has enough common sense to know where to start and when to stop, the only way to learn this kinda thing through experience and experimentation.
      1. LostMarine's Avatar
        LostMarine -
        Click here to enlarge Originally Posted by bobS Click here to enlarge
        Is it realistic to think a shop with pro tune ability and some n54 experience could properly tune a RB powered car? I'm thinking of getting rb's this winter and would most likely go to a place like efi for tuning. When cobb says there are variations from car to car, that makes me nervous. I am not experienced enough to play with ATR yet. The last thing I want to do is spend money on a nice RB set up for the car to run horribly and have boost oscillations.
        you have 2 options I can think of, well, 3

        VAC
        MaxPSI
      1. BoostAddict's Avatar
        BoostAddict -
        Well this is good news. I guess it's time for me to get a Cobb again.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by dzenno Click here to enlarge
        That's said in a pretty harsh tone as many have learned by exactly that, trying things, including most if not all of our well respected tuners. Letting someone more knowledgable on the subject that has already seen many things work or not work is always a better idea of course.
        It isn't harsh at all. If you want to learn with the trial and error method then deal with the consequences.
      1. nafoo's Avatar
        nafoo -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        It isn't harsh at all. If you want to learn with the trial and error method then deal with the consequences.
        I agree with dzenno and rader1. Your tone was harsh. Calling people stupid for trying to learn something new is bigot-ish.
      1. lulz_m3's Avatar
        lulz_m3 -
        If there ever was a great engine to learn how to tune, it is the N54. DI and DME nannies have saved people countless times. Hell, on the other forum there was a guy with a crazy sustained lean spike during 3-4k rpms at high load(16+psi iirc), logs didnt even show that it knocked. Try that on another platform and let me know how it goes.
      1. Tzu's Avatar
        Tzu -
        With the rev 2 only capable of pulling 4deg of timing, I think we were all thankful for the DME nannies at some point.
      1. dzenno@PTF's Avatar
        dzenno@PTF -
        Click here to enlarge Originally Posted by lulz_m3 Click here to enlarge
        If there ever was a great engine to learn how to tune, it is the N54. DI and DME nannies have saved people countless times. Hell, on the other forum there was a guy with a crazy sustained lean spike during 3-4k rpms at high load(16+psi iirc), logs didnt even show that it knocked. Try that on another platform and let me know how it goes.
        While I do agree with you I also think it has made a lot of people too comfortable with experimenting with it. Going off to other platforms and thinking the process would be similar "might" be full of expensive surprises if you know what I mean.

        Click here to enlarge Originally Posted by Tzu Click here to enlarge
        With the rev 2 only capable of pulling 4deg of timing, I think we were all thankful for the DME nannies at some point.
        Always said that the N54 DME is simply mind blowing how quickly it responds to anything thrown at it.
      1. Dfv2's Avatar
        Dfv2 -
        The N54 DME and control systems are unreal, anyone can "tune" an N54.

        Here's some perspective from the subie world. This is an OVERVIEW of how to tune for E85 on a subie, EJ257 or similar:
        http://www.iwsti.com/forums/3016602-post7.html

        Here's how to do it with an N54:
        Fill with E85 (up to ~45%) and drive.

        When we have a fuel scalar from Cobb for 100% E85 tuning, we will most likely enter a single cell value of say 1.6 instead of 1, and then fill with 100% E85 and drive. Bottom line, this DME is making piggie developers and armchair tuners look like STUDS. I mean, we ARE studs!
      1. enrita's Avatar
        enrita -
        Click here to enlarge Originally Posted by Dfv2 Click here to enlarge
        The N54 DME and control systems are unreal, anyone can "tune" an N54.

        Here's some perspective from the subie world. This is an OVERVIEW of how to tune for E85 on a subie, EJ257 or similar:
        http://www.iwsti.com/forums/3016602-post7.html

        Here's how to do it with an N54:
        Fill with E85 (up to ~45%) and drive.

        When we have a fuel scalar from Cobb for 100% E85 tuning, we will most likely enter a single cell value of say 1.6 instead of 1, and then fill with 100% E85 and drive. Bottom line, this DME is making piggie developers and armchair tuners look like STUDS. I mean, we ARE studs!
        yeah but i would never run 100% e85 on a system not designed to run it.