• 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. COBB Tuning's Avatar
        COBB Tuning -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        Edited for formatting and promoted to the front page.

        Well done guys, well done.
        Sticky,

        Thank you for the edit and front page location!

        Gary
      1. dzenno@PTF's Avatar
        dzenno@PTF -
        Click here to enlarge Originally Posted by Terry@BMS Click here to enlarge
        I was referring to Dzenno's post on that reply, but there is no reason RBs can't be properly mapped with a flash tune alone. It's just going to be an awful lot of work to perfect. Would take tuning in maybe 10 tables. And then once perfected it may throw itself out of wack again during weather changes, etc. And given the lack of features like progressive meth mapping, in dash gauges, low gear boost reduction, on the fly tuning, etc, I predict most serious cars will take the path of least resistance and best results via a piggy+flash approach.
        Agree that there is no reason why RBs can't be tuned with ATR to run right especially 6MT cars. 6ATs are a different story but its no different with the piggies on 6ATs. The only difference is yes, while in gear you'll be fine but the shifts will be so hard with full torque there that you'll be destroying that 6AT tranny in no time if you drive your car like you should.

        In terms of 6MT, there are already great Cobb maps for RB turbos and they work great on my car. For anyone looking into making them more aggressive its not a problem if you're willing to learn a thing or two about ATR.

        In terms of weather conditions its really easy to make the map behave like a piggy. Just set all the compensation tables to not compensate Click here to enlarge Then there won't be any deviations in hot/cold weather. But, that's not what I want out of my car and is definitely not the most ideal solution. You DO want to take into account all those compensations IF you're building a proper all around tune. Sure its not as easy as saying run 20psi lol but its doable, just takes time and takes one to be patient to make one
      1. lulz_m3's Avatar
        lulz_m3 -
        Got my first taste of playing with ATR, very good stuff. Amazing what a little bit of timing will do to wake up the OTS maps.
      1. Sticky's Avatar
        Sticky -
        Dude... Facebook for some reason used this photo from my rss feed as the preview image for the article on the BimmerBoost facebook page: www.facebook.com/bimmerboost

        Click here to enlarge

        Damn it...
      1. dzenno@PTF's Avatar
        dzenno@PTF -
        ROFL!
      1. spool twice's Avatar
        spool twice -
        Click here to enlarge Originally Posted by lulz_m3 Click here to enlarge
        Got my first taste of playing with ATR, very good stuff. Amazing what a little bit of timing will do to wake up the OTS maps.
        how many extra degrees of advance did you use?
      1. spool twice's Avatar
        spool twice -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        Dude... Facebook for some reason used this photo from my rss feed as the preview image for the article on the BimmerBoost facebook page: www.facebook.com/bimmerboost

        http://www.bimmerboost.com/images/im...732_5582-1.jpg

        Damn it...
        Click here to enlarge
      1. lulz_m3's Avatar
        lulz_m3 -
        Click here to enlarge Originally Posted by spool twice Click here to enlarge
        how many extra degrees of advance did you use?
        I added 2 degrees from 3500-6500 for load targets above 120. I'm also running a small blend of E85, absolutely no timing corrections. I'll probably try adding another degree tomorrow and relog. I also fattened up the AFR's a bit, just to be on the safe side. I really like the Timing correction factor tables for IAT/OIL temps as well.
      1. vasillalov's Avatar
        vasillalov -
        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. The throttle body is used predominantly for boost control. All this makes sense, but what I want to know if the following is true:

        Say you are cruising leisurely on 4th gear. The engine is operating in vacuum at this point. You then decide to speed up rapidly and you put your foot down. The ECU sees this as a request for more load, determines that it needs more boost to meet the new requested load target and then actuates the waste gates which up to this point were almost completely open because the engine was in vacuum.

        Your foot is still down on the pedal waiting for response. Wastegates shut, turbos spool, boost builds up before the throttle plate. The ECU sees the increase of the boost and then opens the throttle plate, releasing all the accumulated boost into the manifold and finally the engine delivers requested output.

        If all this is true, in order to fiddle with the throttle response (which is what I want to do at this point), I need to trace the maps in ATR in the following path:

        Accelerator Pedal Position -> Requested Load Target -> Waste Gate Duty % -> Throttle Plate Position

        Does this sound right?
      1. Kylu II's Avatar
        Kylu II -
        Great news indeed, but I'm not ready to give up on my easy bake over just yet....
      1. lulz_m3's Avatar
        lulz_m3 -
        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. The throttle body is used predominantly for boost control. All this makes sense, but what I want to know if the following is true:

        Say you are cruising leisurely on 4th gear. The engine is operating in vacuum at this point. You then decide to speed up rapidly and you put your foot down. The ECU sees this as a request for more load, determines that it needs more boost to meet the new requested load target and then actuates the waste gates which up to this point were almost completely open because the engine was in vacuum.

        Your foot is still down on the pedal waiting for response. Wastegates shut, turbos spool, boost builds up before the throttle plate. The ECU sees the increase of the boost and then opens the throttle plate, releasing all the accumulated boost into the manifold and finally the engine delivers requested output.

        If all this is true, in order to fiddle with the throttle response (which is what I want to do at this point), I need to trace the maps in ATR in the following path:

        Accelerator Pedal Position -> Requested Load Target -> Waste Gate Duty % -> Throttle Plate Position

        Does this sound right?
        As soon as you start pressing on the accelerator, the DME is going to open the throttle body to let as much air as possible into the engine - even with 0 boost. I believe what you should be looking at is your timing advance, which really needs to be dialed in on a dyno so that you can find MBT, and tune around it. Adding timing will give the car an "eager" feeling, vs laggy feeling. Cobb ots maps are very conservative on how much timing they run.
      1. boostingwild's Avatar
        boostingwild -
        this sounds good, should i be ditching the JB4 for Cobb alone, or keep it and add Cobb on as well?
      1. themyst's Avatar
        themyst -
        Click here to enlarge Originally Posted by lulz_m3 Click here to enlarge
        As soon as you start pressing on the accelerator, the DME is going to open the throttle body to let as much air as possible into the engine - even with 0 boost. I believe what you should be looking at is your timing advance, which really needs to be dialed in on a dyno so that you can find MBT, and tune around it. Adding timing will give the car an "eager" feeling, vs laggy feeling. Cobb ots maps are very conservative on how much timing they run.
        You do understand MBT changes as boost pressure changes right? Pick the appropriate boost curve and tune everything else around that. If you're running Cobb alone fueling and vanos should be dialed in appropriately if you are using an OTS map as your base. Always a fine line with timing and boost it seems. Can always add more fuel if it's not slowing you down too much.
      1. themyst's Avatar
        themyst -
        Click here to enlarge Originally Posted by boostingwild Click here to enlarge
        this sounds good, should i be ditching the JB4 for Cobb alone, or keep it and add Cobb on as well?
        Ideally stacking isn't a terrible option since it provides auxiliary features that Cobb alone does not offer.
      1. bobS's Avatar
        bobS -
        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.
      1. lulz_m3's Avatar
        lulz_m3 -
        Click here to enlarge Originally Posted by themyst Click here to enlarge
        You do understand MBT changes as boost pressure changes right? Pick the appropriate boost curve and tune everything else around that. If you're running Cobb alone fueling and vanos should be dialed in appropriately if you are using an OTS map as your base. Always a fine line with timing and boost it seems. Can always add more fuel if it's not slowing you down too much.
        Yep, not sure i understand what you're getting at?
      1. Tzu's Avatar
        Tzu -
        Just read the Cobb user tuning guide. Cobb FTMFW. I can't wait to see some awesome results.
      1. Skyhart's Avatar
        Skyhart -
        Click here to enlarge Originally Posted by Q4P Click here to enlarge
        Waiting to see how long for the first e90 post "tooner" to blow an engine...
        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?
      1. themyst's Avatar
        themyst -
        Click here to enlarge Originally Posted by lulz_m3 Click here to enlarge
        Yep, not sure i understand what you're getting at?
        You stated you would tune timing first.
      1. themyst's Avatar
        themyst -
        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 say not for a long time.