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    • 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. Dfv2's Avatar
        Dfv2 -
        Click here to enlarge Originally Posted by enrita Click here to enlarge
        yeah but i would never run 100% e85 on a system not designed to run it.
        I'm not scared by that fabled discussion with the BMW DI engineer that said the injectors will explode into startdust on E85. Just too many 'systems not designed for it' that run famously well on E85, just like every car that isn't designed to have meth injected into the charge air but stil manages to run Click here to enlarge

        There will be a few pioneers of straight E85 on the N54, and ATR/ATP will allow it to happen.
      1. xbox_fan's Avatar
        xbox_fan -
        Click here to enlarge Originally Posted by Dfv2 Click here to enlarge
        I'm not scared by that fabled discussion with the BMW DI engineer that said the injectors will explode into startdust on E85. Just too many 'systems not designed for it' that run famously well on E85, just like every car that isn't designed to have meth injected into the charge air but stil manages to run Click here to enlarge

        There will be a few pioneers of straight E85 on the N54, and ATR/ATP will allow it to happen.
        IIRC the "engineer" stated that the fuel system would run just fine on E100 but that at high temps the injectors would leak on pure ethanol compared to gasoline.
      1. lulz_m3's Avatar
        lulz_m3 -
        Click here to enlarge Originally Posted by xbox_fan Click here to enlarge
        IIRC the "engineer" stated that the fuel system would run just fine on E100 but that at high temps the injectors would leak on pure ethanol compared to gasoline.
        I revisited that thread the other day before deciding to run an E85 blend, he was a continental engineer, and he said that in their testing the filter inside of the DI began to melt when temperatures exceeded 100C. I have seen nothing to suggest that the injectors would leak because of methanol.

        Taken from - http://www.n54tech.com/forums/showpo...8&postcount=34
        "Have you experience with this engine and E85 fuel or do you have any thought on it ? Can e.g. the injectors handle alcohol ?
        We have a lot of experience with E85. Currently, we have an issue that if the injector is hotter than 100 Celsius, we are seeing melting of the fuel filter in the injectors. As long as the temperature of the injector stays under the 100 Celsius, this engine is perferctly capable to run E85. As a matter of fact, it will run E100 without any problem under cold conditions. There is no need to preheat the fuel.
        We are investigating the filter issue, and we hope to have a solution next year. Whether or not we will create injectors for this engine, depends on the market (read: BMW).
        It is not possible to replace this filter yourself; you cannot open the injector to get to that part."
      1. xbox_fan's Avatar
        xbox_fan -
        Click here to enlarge Originally Posted by lulz_m3 Click here to enlarge
        I revisited that thread the other day before deciding to run an E85 blend, he was a continental engineer, and he said that in their testing the filter inside of the DI began to melt when temperatures exceeded 100C. I have seen nothing to suggest that the injectors would leak because of methanol.
        Yes that was the "problem" though dont understand why etanol would cause anything to melt. Ethanol burns cooler and the need for additional fuel would cool the injectors more, or at least I assume that .

        I have been running 40-50% E85 for over a year without issues.
      1. bmw335iguy's Avatar
        bmw335iguy -
        I never bought much into what was said about the filter melting either, 100c is only 212f and as hot as the n54 runs I would imagine said filters would have melted on pump gas a long time ago. When cruising on the freeway running a 50/50 blend of e85 my oil temps will be as low as 200-210f. On pump gas they would be around 230f. Not sure how that translates to fuel injector temps but a cooler running engine should lead to cooler running injectors.
      1. Dfv2's Avatar
        Dfv2 -
        The fuel is constantly cooling the filter as it flows through it. Whether E85/E100 has less of an ability to absorb heat energy than 93 octane, not sure. That's what he's getting at though, if my academic background serves me correct...
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by nafoo Click here to enlarge
        I agree with dzenno and rader1. Your tone was harsh. Calling people stupid for trying to learn something new is bigot-ish.
        Where did I call anyone stupid for trying to learn? I said if you are stupid enough to mess with it and do not know what you are doing be prepared to deal with the consequences. Definitely make sure you learn all you can beforehand. Do not go crying to Cobb if you blow your motor.
      1. xbox_fan's Avatar
        xbox_fan -
        Click here to enlarge Originally Posted by Dfv2 Click here to enlarge
        The fuel is constantly cooling the filter as it flows through it. Whether E85/E100 has less of an ability to absorb heat energy than 93 octane, not sure. That's what he's getting at though, if my academic background serves me correct...
        I guess injector temps rise when you let of the throttle since there is almost no fuel injected then.
      1. nafoo's Avatar
        nafoo -
        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.
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        Where did I call anyone stupid for trying to learn? I said if you are stupid enough to mess with it and do not know what you are doing be prepared to deal with the consequences. Definitely make sure you learn all you can beforehand. Do not go crying to Cobb if you blow your motor.
        It's just an interpretation of what you meant by the term "knowing." Personal example, I don't know exactly what I'm doing, but have tried advancing timing based on other more knowledgeable people's advise. I know that the settings I put in are less than what other tunes run, but does that make me stupid, since I don't fully understand what timing does?

          Click here to enlarge Spoiler:  
        Click here to enlarge
      1. trufus's Avatar
        trufus -
        Click here to enlarge Originally Posted by nafoo Click here to enlarge
        It's just an interpretation of what you meant by the term "knowing." Personal example, I don't know exactly what I'm doing, but have tried advancing timing based on other more knowledgeable people's advise. I know that the settings I put in are less than what other tunes run, but does that make me stupid, since I don't fully understand what timing does?
        You're violently agreeing. He simply said that people who are not smart enough to do what you did (seek advice, on the backs of giants and whatnot), may deserve whatever consequences they end up with.

        I can't post links, but there's a wiki article called "Ignition Timing". Might be worth a read.
      1. dzenno@PTF's Avatar
        dzenno@PTF -
        Click here to enlarge Originally Posted by nafoo Click here to enlarge
        It's just an interpretation of what you meant by the term "knowing." Personal example, I don't know exactly what I'm doing, but have tried advancing timing based on other more knowledgeable people's advise. I know that the settings I put in are less than what other tunes run, but does that make me stupid, since I don't fully understand what timing does?

        http://www.bimmerboost.com/images/im...012/06/l-1.jpg
        With that pic how dare I disagree lol
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by trufus Click here to enlarge
        You're violently agreeing. He simply said that people who are not smart enough to do what you did (seek advice, on the backs of giants and whatnot), may deserve whatever consequences they end up with.
        Exactly...
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by nafoo Click here to enlarge
        It's just an interpretation of what you meant by the term "knowing." Personal example, I don't know exactly what I'm doing, but have tried advancing timing based on other more knowledgeable people's advise. I know that the settings I put in are less than what other tunes run, but does that make me stupid, since I don't fully understand what timing does?

        http://www.bimmerboost.com/images/im...012/06/l-1.jpg
        It makes you stupid if you mess with parameters you are unfamiliar with and suffer failure as result of modying those parameters too far. You would have nobody to blame but yourself. What is so hard to understand about this?
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by nafoo Click here to enlarge
        Personal example, I don't know exactly what I'm doing, but have tried advancing timing based on other more knowledgeable people's advise.
        So you sought advice... good idea. If you didn't and made some huge mistake it would not have been Cobb's fault or anyone's but your own.

        I just know someone is going to screw up their motor and then whine and cry Cobb didn't hold their hand.

        Learning with the software is fine. Work your way up. Don't go crazy messing around leading to a failure and then make a thread about how the software should have saved you from yourself.
      1. nafoo's Avatar
        nafoo -
        Click here to enlarge Originally Posted by trufus Click here to enlarge
        You're violently agreeing. He simply said that people who are not smart enough to do what you did (seek advice, on the backs of giants and whatnot), may deserve whatever consequences they end up with.

        I can't post links, but there's a wiki article called "Ignition Timing". Might be worth a read.
        Click here to enlarge Originally Posted by dzenno Click here to enlarge
        With that pic how dare I disagree lol
        Click here to enlarge

        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        It makes you stupid if you mess with parameters you are unfamiliar with and suffer failure as result of modying those parameters too far. You would have nobody to blame but yourself. What is so hard to understand about this?
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        So you sought advice... good idea. If you didn't and made some huge mistake it would not have been Cobb's fault or anyone's but your own.

        I just know someone is going to screw up their motor and then whine and cry Cobb didn't hold their hand.

        Learning with the software is fine. Work your way up. Don't go crazy messing around leading to a failure and then make a thread about how the software should have saved you from yourself.
        Yea I know what you mean now. Just saying that when I first read what you said it seemed harsh and explained my thought process and how it made sense to me since others stated the same.

        Not arguing, hence the picture, but just trying to explain it from my side of the computer screen.

        Interwebs misunderstandings start wars. Trying to avoid, again, hence the beautiful picture Click here to enlarge
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by nafoo Click here to enlarge
        Interwebs misunderstandings start wars. Trying to avoid, again, hence the beautiful picture
      1. BoostAddict's Avatar
        BoostAddict -
        Does anybody know how times ATR can be downloaded per Access Port? My buddy is lending me his AP tomorrow night, and I wanted to make an 50/50 e85 Map on the way to the track. I don't want to use up one of his downloads of that is the case.
      1. COBB Tuning's Avatar
        COBB Tuning -
        Click here to enlarge Originally Posted by BoostAddict Click here to enlarge
        Does anybody know how times ATR can be downloaded per Access Port? My buddy is lending me his AP tomorrow night, and I wanted to make an 50/50 e85 Map on the way to the track. I don't want to use up one of his downloads of that is the case.
        I don't believe we set a limit in how many times the software can be downloaded for a given AccessPORT, so this shouldn't be an issue for your buddy.

        Gary
      1. BoostAddict's Avatar
        BoostAddict -
        Click here to enlarge Originally Posted by COBB Tuning Click here to enlarge
        I don't believe we set a limit in how many times the software can be downloaded for a given AccessPORT, so this shouldn't be an issue for your buddy.

        Gary
        Awesome! Thanks.
      1. rader1's Avatar
        rader1 -
        Hey guys, there's an e85 discussion going on elsewhere and then the issue of fuel trims maxed(near Max) was brought up and then joshboody brought this up(I know he doesn't have many fans here, but the guy is pretty sharp IMO)
        Click here to enlarge Originally Posted by Joshboody Click here to enlarge
        The DME will just recalculate fuel mass when changing pressure... shouldn't have any effect I assume. Piggies get more fuel by reducing the fuel pressure signal to the DME. This can also raise IDC when DME cannot reach pressure target. At this time there is no way to increase fuel mass with ATR (from what I've reviewed). Potentially reconfig a torque table to reduce load per torque and indirectly get more fuel? Good work OP. I guess to review these maps, I have to upload another ATR for this ROM? I have I8AOS
        Just wondering what you guys think. Is it possible to increase total fuel volume to take e85 into account as ATR exist now?