We recommend Burger Motorsports JB4 tune not only as an excellent stand-alone tune, but also for its advanced safety, boost control, and data logging. The JB4 works wonders whether you are running the JB4 as a stand-alone tune or coupling it with a back-end flash tune. Data logging is essential to ensure your tuned and modified BMW N54 is running well.
However, data logging may look complicated and overwhelming at first sight. With so many parameters where do you even start? In this post we will discuss setting up your N54 for data logging, examining the various parameters, and highlight examples of data logs with useful tips. Another important step prior to data logging is enabling 6-cylinder timing mode. This will show individual cylinder timing and assist in tracking down any potential issues.
However, there are a few steps to enabling 6-cylinder timing. There are a few ways to determine your DME:. Starting the data log is pretty self explanatory. However, there is one additional tip to note. This may be a useful option for those who want to keep their eyes on the road rather than fumbling around with your phone to begin data logging.
Now that your settings are in place we will move onto how you should data log. You want as much information as possible within the data log, including an overview of as much of the RPM range as possible and a gear shift. Therefore, typically the best way to log is as follows:. One caveat we forgot to mention before. As such, you may consider renting an airstrip. Of course, the drive from Colorado to Mexico is beautiful so we tend to opt for the latter. Once you have your logs you should e-mail the.
We prefer to view the. You may opt to use a website such as datazapwhich will graph the logs for you and you can choose individual parameters or a group of parameters to view. We found datazap useful when we were first learning.The JB4 allows for datalogging through the use of the official JB4 interface software or some third-party options.
Datalog files are saved in a CSV format. The name of software used to generate the datalog. See Average Ignition. The maximum range is 0 to Engine speed or revolutions per minute. N5x Engines have a maximum value of about rpm although maximum usable power is usually far below this maximum value. The value of boost the ECU thinks is the current boost value. With the JB4 this signal is altered by the piggyback to meet various tuning objectives. Target is the boost target or set point established by the JB4.
It is generally a curve that peaks around rpm and falls off to either side of this rpm range. The various maps, pedal position, and internal logic will change the values and shape of the curve. Typically, when troubleshooting a car that is making less boost than expected you need to note whether the target is lower than expected, thus resulting in less boost or if the target is appropriate but boost is falling below target. As troubleshooting for these symptoms are completely different.
In addition to the JB4's predefined maps there is a map 6 available for diagnostics where the tuner can fill in the maximum boost targets by RPM under user adjustments. Although this generally is only used to make maps less powerful than what is already defined.
Map 7 for example is about the highest boost targets that factory turbochargers will support. Many older cars will not be able to hit map 7 targets at higher RPM. This is the pressure, in PSI, in the charge pipe just before the throttle valve.
Under ideal conditions, the boost value will equal the boost set point value see Target. The practical range of boost values is zero to about 20 psi. RPM affects the Turbos ability to generate high boost values. The turbos ability to supply mass flow is also greatly affected by ambient air temperature and pressure elevation.
Raising either temperature or elevation decreases the mass airflow capability of the turbos. Gas pedal input.User Name Remember Me? JB4 trims -PM. I've been trying to figure out some codes. I recently got the JB4 connect kit and have been trying to check things out.
There's a display for "trims" and "trims 2". The "trims" has readings displayed, but when I put the "trims 2" on display it's always 0. The "AFR 2", "Boost 2", and others with 2 display readings. This has me nervous. Is this normal? Is it suppose to be 0? Or is this a problem? I've searched and searched, but can find nothing about the "trims 2".
JB4 Frequently Asked Questions
Is your car a N54 or N55? Either way, it's nothing to be worried about, it's just a logging parameter and if it's not logging than it's not active. If there was a big bank variance, there are built in safeties for that.
It's an N I guess you're right, there are safeties. Just didn't know if there was something wrong. Since everything worked but this. Originally Posted by LivinFast I believe so. It's only a couple months since I ordered it. And I believe the latest update was longer ago than that. So I assume it came with the newest version. Sorry, I should have specified. I got them right about the same time. The JB4 only about a week before the connect kit.
I've had them both less than 3 months. Also, it does not have the auto clear function.
And I know the newest update removed that. To read trims on both banks for the N54, you must be running the latest firmware, otherwise a reading of 0 for trims 2 is normal. Click on our banner to visit our website! That's the info I was looking for. Much appreciated.
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User Name.Forgot your password? The unit is called a JB4 which is the name of our most advanced circuit board with CANbus capability. It has been tried and tested over many BMW models and it is time for the evolution to start for the VW market. The typical power gains on this setting are 35whp and 40ft lb. Higher power levels are achievable using the various maps as seen lower down.
With higher octane accompanied with bolt ons and octane we have seen gains of 85whp and 70ft lb in Map 6.
All of this whilst keeping the engines stock fail safes in place. For JB1 users that are upgrading on Map 1 the unit makes the same power with. Map 2 is set more aggressively and 40whp and 55ft lb can be expected as a minimum. The largest gain is felt at high rpm. Torque can be increased though in map 6 to Stage 2 flash levels if users do not have a turbo longevity concern. Here some results from users out in the field. The test group was 48 vehicles across the globe with some users running the JB4 up to 6 months.
Dyno figures are wheel dynojet type unless specified. JB4 DP and Intake running our meth kit. JB4 DP and Intake with a race fuel mix. This car was set with a low torque map per customer request with high boost levels at the top rpm.
JB4 with intake and some Eth on a stingy Mustang dyno JB4 on streets with dp only Map selection: In order to change the map in the picture below under the logging tab you can pick the required map. Under status the unit must show connected.
This is done by clicking file and selecting connect. Upon shipping the following maps are active: Map 0: Stock with complete pass through i. This is the shipped map and is compatible for both 91 and 93 and can be used with cars on hardware.
Map 2: This map is a more aggressive map. Peak boost add is 5. Map 4: This is a stock map but with JB4 logging ability. It is also the starter map for cars that are running flash tunes and are stacking the JB4. It will give the ability to log the car via the JB4.
This is also the safety map, so in any circumstance the JB4 detects a unsafe condition regardless of map it will default to this map. This includes knock detection, lean AFR or the boost safety value being triggered due to lack of boost control. Map 6: User adjustable boost map. The map comes preset with a 5. The preset map is also suitable for manual cars with clutch longevity in mind. The mapping can be done in two manners. If the value at is kept below 10 it will work as a boost adder map.
If the value at is higher than 10 it will work as a absolute map. This means actual total boost targets will need to be entered. Map 8: Map three allows the JB4 to be the methanol controller working as a fail safe cutting boost if lack of meth flow is detected. You will require a Coolingmist FSB to get this working. User Adjustment page: Below is a outline of settings that can be changed in the User adjustment page: Map 6 blue outline : as explained above AFR Bias orange outline : This value is to be set across the range at It is the parameter which adjust the AFR ratio.JB4 vs cobb bm3 bootmod3 mhd apr giac dmetune weistec flash hptuners eurocharged unitronic ktuner hondata openflash and countless others.
Unlike other similar-looking tuning systems the JB4 is also able to tap in to CANbus - analogous to a spinal cord - allowing it to communicate and receive information from not only the ECU but also the transmission computer, stability control module, dash module, and many others. This CANbus connection provides a complete set of real-time operational data which is then dynamically incorporated into your JB4 tuning. A flash tune, on the other hand, modifies the tables on the ECU directly for higher performance.
So which is better? A better question is probably which is better for your specific needs? Installation: Flash tuning can be simpler initially as there is no extra hardware to install. With the JB4 you plug it into sensors in the engine bay, usually taking 20 to 30 minutes the first time as you learn where each sensor is for your specific model.
Flash tuning, while easy to install, can never be fully removed. Even if flashing to stock later, permanent traces of the more aggressive tuning will be stored in your ECU, transmission computer, stability control module, and, if flashed via the OBDII port, also your gateway module. Performance: The JB4 is able to achieve a dramatic performance increase, completely transforming your vehicle. Cost: There is a wide range of price variance for flash maps ranging from a few hundred dollars up to several thousand depending on the application.
Because of the dynamic nature of JB4 tuning, it is able to self-tune critical and difficult-to-dial-in aspects of tuning such as wastegate control and fuel trim range for various modifications, climates, and vehicle conditions, largely eliminating the need for expensive and time-consuming custom flash tuning. Unlike most flashes and custom-tuned flash maps which are disposable, the JB4 can be removed and reinstalled on your next vehicle or resold down the road.
Safety: While the flash tune can adjust more tables directly there is also a lot more that can go wrong. Many flash tunes adjust the knock sensor feedback and other critical tables, sometimes unwittingly, creating a much higher risk of engine damage.
Flash tuning is also limited to the factory logic paths which, while generally sufficient for factory vehicles, can become inadequate when dealing with higher-powered and modified vehicles. The JB4, on the other hand, cannot interfere with the factory safety systems by design.
It can only run your tuning from the extensively tested factory programmed tuning tables while also adding a robust range of additional safety systems not possible flash-only.
Including going into bypass mode if boost exceeds a user defined value, AFR in either bank goes lean, fuel trims in either bank max out or vary dramatically from each other, fuel pressure drops below a specific value, etc.
The JB4 continually monitors your tuning in real time via CANbus and turns off if things go sideways. With a JB4 you can change performance profiles or revert back to factory tuning in real time using your smart phone, and in some cases in the dash directly.
The amount of boost limit can be adjusted on the fly in the app to optimize performance for track conditions. While JB4 features vary by platform, each platform receives free regular firmware updates where we add additional features, improve mapping performance, and continually refine the tuning to ensure JB4 customers remain ahead of the pack.
Can I run both? In fact we regularly publish free JB4 back end flash maps meant to be used in conjunction with the JB4 for those customers who are comfortable with flashing their car and looking to add features not possible JB4-only. The addition of flash mapping to the tuning flexibility, features, and safety the JB4 provides gives you the best of both worlds and is commonly found in record setting vehicles. JB4 vs racechip dte nm vr afe scorcher lap uncle and countless others.
While the JB4 is the best and most highly developed piggyback tuning system there is no shortage of would-be competitors. What is CANbus anyway? CANBus is the spinal cord that connects the many modules or computers throughout your vehicle together and allows them to operate as a cohesive team. The JB4 includes this same level of vehicle-wide computer integration. A JB4 with its CANbus connection can read virtually every sensor on your vehicle including critical internal calculations like fuel trims and knock count.
Common symptoms of non-CANbus related tunes include stuttering, poor shifting, and reduced top-end performance.We recommend it as the starting place for all those new to modifying their car and those who plan to continue. The tuner installs between your car's sensors and it's ECU Computer and manipulates how the car runs via these connections. With these connections and it's own powerful computer, the JB4 adds loads of horsepower and offers so much more.
For an affordable price, minimal install time, and a host of features there's not a better solution for power. Add an intake with your JB4 for a real kick. An intake will let your car breathe easier, making even more power.
Add one on to increase the turbo and blow off sounds all while enhancing the performance of your car. Replace your OEM charge pipe now before it's too late. With higher power comes higher stress, and many plastic OEM charge pipes can not keep up. Our selection also has options for methanol bungs and aftermarket blow off valves.
Add one for piece of mind, and future modifications. Notify me when this product is available:. Bluetooth your JB4 to your Phone! View critical engine The best value in N54 intakes! How about up to 60hp to the wheels 80hp crank on a completely stock car or up How about up to 50hp to the wheels 65hp crank on Menu Cart. Continue Shopping Your Cart is Empty.
Wanna go fast? We can help. Dash Controls Make changes quick. Accessorize Keep up with the go. Select your vehicle. Model All Models 2. Find My Parts. Performance Tunes. Performance Intakes.For a logistic regression, input data for all numerical fields except the objective field must be provided. Example: "my new prediction" private optional Whether you want your prediction to be private or not. This will be 201 upon successful creation of the prediction and 200 afterwards.
Make sure that you check the code that comes with the status attribute to make sure that the prediction creation has been completed without errors.
The method used to combine predictions from the non-boosted ensemble. See the available combiners above. However, for logistic regressions, it really means probability, and thus, confidence will be deprecated soon.
Note that this property is not available for ensembles with boosted trees and that for models An array of confidence pairs for each category in the objective field. True when the prediction has been created in the development mode. The number of predictions in the ensemble that failed. The dictionary of input fields' ids and values used as input for the prediction.
Specifies the type of strategy that a model or models in an ensemble will follow when a missing value needed to continue with inference in the model is found.
Either 0, 1, or 2 to specify respectively whether the prediction is from a single model, an ensemble, or a logistic regression. The id of the field that it predicts in the model, ensemble, or logistic regression. A string if the task is classification, a number if the task is regression prediction filterable, sortable A dictionary keyed with the objective field to get the prediction output for the model, ensemble, or logistic regression. An array with a prediction object for each model in the non-boosted ensemble.
An array of probability pairs for each category in the objective field. The parameters (k and class) given when a threshold-based combiner is used for the non-boosted ensemble.
A list of the confidence (or expected error in the regression non-boosted ensemble) for each prediction candidate. Bad fields are ignored. That is, if you submit a value that is wrong, a prediction is created anyway ignoring the input field with the wrong value. An ordered array of Predicate Objects in the decision path from the root to the current node or to a final decision if the the next predicate array is empty. Unknown fields are ignored. That is, if you submit a field that is wrong, a prediction is created anyway ignoring the wrong input field.
An array of field's ids with wrong values submitted to build the model or logistic regression. A status code that reflects the status of the prediction creation. Example: "my new centroid" private optional Whether you want your centroid to be private or not. A dictionary describing the centroid.
See the Centroid Object definition below. This will be 201 upon successful creation of the centroid and 200 afterwards. Make sure that you check the code that comes with the status attribute to make sure that the centroid creation has been completed without errors. This is the date and time in which the centroid was created with microsecond precision.
Distance will be set to -1 if BigML can't computer a centroid for a point due to a missing numeric value.