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JB4 Information thread for 2.0T 252hp

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JB4 Information thread for 2.0T 252hp

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Old 09-17-2017, 03:34 AM
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Default JB4 Information thread for 2.0T 252hp

We would like to introduce users to our latest offering for the Audi 2.0T 252hp longitudinal mounted engine found on the below cars.

• Audi B9 A4 2.0TFSI 252hp
• Audi B9 A4 2.0T Allroad
• Audi A5 2.0T TFSI 252hp
• Audi A6 2.0T TFSI 252hp
• Audi Q7 2.0T TFSI 252hp
• Porsche Macan 2.0T 252hp

[SIZE="6"]Info for JB4[/SIZE]

The unit is called a JB4 which is the name of our most advanced circuit board with CANbus connection (vehicle data network).





Complete JB4 Beta units can be found at this link: JB1 and JB4 VW Performance Tuner - BurgerTuning.com

The JB4 is a true plug and play tune offering safe and adjustable gains.

The unit ships with a base setting in map 1 that increases the boost by +4.0psi over stock that is safe to be used with 91US octane. The typical power gains on this setting are 50hp and 70ft lb. Higher power levels are achievable using the various maps as seen lower down.



Install instructions:
Install instructions can be found here: http://www.burgertuning.com/instruct...ns_JB1_JB4.pdf




Connectivity:
To connect to the unit to make changes or do logs you have two options:
1. Laptop connection using our BMS Data Cable via free Windows and Mac software. (conventional serial cables will not work and possibly damage the board).

2. Via Bluetooth using our JB4 Connect kit that is IOS and Android compatible. The Bluetooth device replaces the need for our BMS Data Cable. On some Android devices users have has success connecting using our Data Cable. The App for the handset has a separate charge and can be found in the Google play store or App store as JB4 Connect.
The App can also be used for a gauge displaying showing true values, has shift light capability and acceleration times are being worked on.

JB4 connect link here: Wireless JB4 Bluetooth Connect Kit - BurgerTuning.com



User interface software:
For users that have opted to purchase the optional but recommended for JB4 BMS Data Cable you will need to download and install the Windows user interface at this link http://www.n54tech.com/flash_files/jb4_interface.zip
There is a 3rd Party Developed Mac interface that can also be used, download link can be found here at bottom of post 1 3rd Party JB4 Interface (iOS, Android, OS X) - N54Tech.com - Your Source for International Turbo BMW Racing Discussion

Tutorial of how to install User interface software, connect to unit and make changes.

https://www.youtube.com/watch?v=MjQjMWBVve4 Directions on installing the interface and connecting to your JB can be found here http://www.n54tech.com/forums/showpo...21&postcount=1
Firmware is what runs the JB4 unit. As we release updates or new firmware versions this can be uploaded to your unit free of charge.




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.e. the JB4 does nothing


Map 1: Tuned map with a average of 4.0psi over stock. 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 and adds 5.4psi over stock.

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 for a car running bolt on hardware with a downpipe as a minimum for use and is ready to use on any car running 93 octane. 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 1500 is kept below 10 it will work as a boost adder map. If the value at 1500 is higher than 10 it will work as a absolute map. This means actual total boost targets will need to be entered.

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 (red outline): This value is to be set across the range at 100. It is the parameter which adjust the AFR ratio. Unless otherwise advised by us its should be left alone. For cars using the JB4 over a flash tune this value will start of at 0 across the rpm range and working on logs we will advise the end user on the settings.

Boost safety (green outline): This value is a boost ceiling that user will set. It is recommended the value of this is 2psi over peak tuned map. i.e. if you hitting 24psi set this at 26psi. If for whatever reason the car overboost it will default straight to map 4 returning the car to the stock tune.

Fuel Open Loop (purple outline): This value is what controls the rail pressure to keep fuel trims in check. It is used to avoid having the ECU compensate fuel for the unseen boost. The unit ships with a 60 value. Upon logging some users with hardware may need to raise this value. The ceiling on most cars is 60. For users that are stacking the JB4 over a flash tune this value will be set to 0 initially and via logs we will see if it needs to be raised to compensate for the small boost add.

Max boost add (pink outline): These values represent the maximum boost allowed in each gear with the minimum value being the stock tunes value. If you are using boost add values in map 6 you will add the amount of add you want max. i.e. If your high rpm values are set at 5.5 and you do not want any boost in first you will set the value to .1. If you want only 2psi add over stock you will set it to 2. This is the methodology you will use if you running the JB4 over a flash tune as well. Future firmware updates will be able to remove boost even below the stock request.
For users that are entering absolute values and say your peak is 24psi, you will enter the lowest you want allowed. Stock is around 17psi so you can do first for stock, 19 for second and so forth.





Logging:

The JB4 now has full logging ability and all the parameters on the logging page are logged. The only three parameters to be added in the next firmware update is the oil temp, water temp and transmission temp.
Ign 1 represent overall timing with Ign 2-5 timing adaption and the rest are self explanatory. IAT is the value in F x10.


Ign 1 represent overall timing with Ign 2-5 timing adaption and the rest are self explanatory. IAT is the value in F x10.

Below a illustration of what a log will look like with a lot of parameters selected on display.



FAQ:

Can I run the JB4 with another device connected to the CANbus?
No, any other device connected to the OBD port creates latency on the CANbus. The CANbus was designed to allow one device at a time and further data being pulled may create safety issues on the network as well as bad signal to the JB4

Will BMS release cluster display and steering wheel map switching?
At this stage cluster hijack has proven to be cost prohibitive due to the Gateway system used by VW. We are looking at getting cheaper solutions that may be affordable. Steering wheel map switching or in car map switching is something being worked on and will come in a future firmware update.

What future features will the JB4 have?
Currently we working on the code reading ability which will come as the first firmware update. Next in line is an Autotune map. Once we have gathered enough data we will be able to create a dynamic map that will self adjust on the fly maximizing performance regardless of conditions, mods and octane used.
Why is the JB4 released as Beta?
When we release units they stay in Beta for quite a while. Any updates done to the unit are firmware related so they get uploaded using the BMS Data Cable.
The JB1 stayed in Beta for a year with only one update when we opened map 6 use.
The JB4 will be ever evolving as we keep adding features to it relative to customer requests.


Will the JB4 remove my speed limiter?
At this point in time, no. The speed limiter affects many safety parameters and until we are certain there are no ill effects on this we will not have speed limiter removal available. The speed limit exceeded is also a trigger point logged in the ECU which may cause issues down the line for any form of claim.


Can launch control be added for a manual car?
No, at this stage this requires changes in the ECU structure which the JB4 does not access or tamper with. We have had success with this on other brands with add on hardware so its something we to intend down the line.


Can the JB4 support larger turbos?
At this stage it is a unknown. We have successfully tuned hybrid turbos and the IS38 when coupled with a flash tune as a backend which is called stacking.


How do I know if I can stack the JB4 over my flash tune and what is the process?
This varies on what the flash tune is requesting from the car and if there is room for improvement. If more hardware is used, higher octane or ethanol or meth has been added chances are there is a gain to be had. On stack tuned cars we work one on one with clients so we can understand the trend and get a better idea for the community where gains can be had.


Do I need a professional to custom tune my car if I want more power than the preset maps?
BMS is renowned for its customer service and we can assist any customer with setting his car up to optimize performance if the unit was bought new from us or a dealer. A large online community exists as well where users share their findings. The device works in such a way that it is easy for first time enthusiasts to get a taste of self tuning.


Why does the JB4 read my Vin number and is it Vin locked?
The Vin is read for certain mapping purposes. The unit is not locked to the car which would be unethical and can be resold.


Why is the JB4 cheaper than other options yet more advanced?
The circuit board used in the Audi product has been used over many other brands and developed over a period of time so the development cost is spread over many models.

Below is a dyno sheet from one of our testers running 91 octane. Power is corrected to the flywheel, torque is in Nm.





For any questions feel free to post here or email me [email protected] for a faster response.

Last edited by [email protected]; 06-23-2018 at 09:53 AM.
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Old 09-17-2017, 03:35 AM
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JB1 info

The JB1 is a simpler plug and play unit. It still maintains the fueling element of the JB4 but does not have network connectivity.

The unit is designed to be more of a plug and play solution with a easy install process giving gains of 45hp and 65ft lb of torque on 91oct.

Install instruction:
http://www.burgertuning.com/images/d...tall_guide.jpg

User that decide to go this route will have the capability of upgrading their units down the line to JB4's by buying the upgrade kit.

Last edited by [email protected]; 09-17-2017 at 03:41 AM.
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Old 09-18-2017, 12:01 PM
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Cool stuff George! BMS has been fantastic in the BMW space, glad to see they are making strides in the VW and Audi community too. Are the numbers you put in this post correct? It says +55HP and +60ft/lbs for the JB4 but +45HP and +65HP for the JB1. I would assume with the adjustment the JB4 makes on the fly via the ODB2 that the number would be at least the same or higher for torque on Map1
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Old 09-18-2017, 12:08 PM
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Originally Posted by A4ORCE1 View Post
Cool stuff George! BMS has been fantastic in the BMW space, glad to see they are making strides in the VW and Audi community too. Are the numbers you put in this post correct? It says +55HP and +60ft/lbs for the JB4 but +45HP and +65HP for the JB1. I would assume with the adjustment the JB4 makes on the fly via the ODB2 that the number would be at least the same or higher for torque on Map1
Well spotted. Not sure where that came from. The typical gains are 50hp and 70ft lb in map 1.
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Old 09-19-2017, 01:50 AM
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Originally Posted by [email protected] View Post
JB1 info

The JB1 is a simpler plug and play unit. It still maintains the fueling element of the JB4 but does not have network connectivity.

The unit is designed to be more of a plug and play solution with a easy install process giving gains of 45hp and 65ft lb of torque on 91oct.

Install instruction:
http://www.burgertuning.com/images/d...tall_guide.jpg

User that decide to go this route will have the capability of upgrading their units down the line to JB4's by buying the upgrade kit.
If I buy the JB4, can I use it as a JB1 if I don't want to run the OBD connection?

Why does the JB1 + Upgrade kit cost so much more than just buying a JB4? JB4 is $50 more than JB1 but Upgrade kit is $125?

For the Bluetooth Wireless Kit, there's Grey Shell Rev1 and Without Grey Shell Rev2 and JB4. What does this mean and how does it relate to JB1/JB4 module? That is, which one to buy if I'm getting a JB1 or JB4?
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Old 09-19-2017, 02:53 AM
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Originally Posted by coolxal View Post
If I buy the JB4, can I use it as a JB1 if I don't want to run the OBD connection?

Why does the JB1 + Upgrade kit cost so much more than just buying a JB4? JB4 is $50 more than JB1 but Upgrade kit is $125?

For the Bluetooth Wireless Kit, there's Grey Shell Rev1 and Without Grey Shell Rev2 and JB4. What does this mean and how does it relate to JB1/JB4 module? That is, which one to buy if I'm getting a JB1 or JB4?
The JB4 requires the OBD connection to run. There is a failsafe map in the event it is removed but its not recommended for continuous use.

The upgrade kits includes a new circuit board (JB4) as well as the wiring required to upgrade the JB1 unit

The correct Wireless or Data cable is without Grey shell for Rev2 and JB4. There was a enclosure update where the connection is now inside the box so the shell/cover is not needed anymore.
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Old 09-19-2017, 07:26 AM
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Can somebody explain the rationale behind using a piggyback unit vs an ECU flash. I'm coming from the Subaru world, so piggybacks are non-existent and tuning is usually done with a Cobb Accessport (or similar opensource PC software) which plugs into the OBD port and allows flashing and unflashing of multiple ECU remaps on demand. For example I had a custom 93 octane maps, an Off the shelf 93 and 91 octane maps, and the stock map and could change between these by reflashing. These maps had access to change a bunch of parameters , most importantly ignition timing, AFR targets , boost targets, and cam advance. For example my usual tune increased the boost peak by 4-5 psi but needed a cooresponding decrease in timing at peak torque and increased fueling to hit those levels safely without knock. This tune worked flawlessly.


​​ I'm not familiar with ECU remapping in the Audi / VW world, so what parameters other than boost can a piggyback do? It's my understanding that the piggyback intercepts sensor output from the O2 sensor, boost vac sensor and changes what the ECU sees. Does this introduce some latency in the system? What advantage does this have over a flashed ECU tune? The only other tune I saw on here is an APR off the shelf tune, and apparently this can't be flashed or unflashed at will by the end user. Is there anything that works like that for the

Sorry for the noob questions, hope I can get some insight here.

Last edited by dawkins20; 09-19-2017 at 07:33 AM.
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Old 09-19-2017, 08:10 AM
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Originally Posted by dawkins20 View Post
Can somebody explain the rationale behind using a piggyback unit vs an ECU flash. I'm coming from the Subaru world, so piggybacks are non-existent and tuning is usually done with a Cobb Accessport (or similar opensource PC software) which plugs into the OBD port and allows flashing and unflashing of multiple ECU remaps on demand. For example I had a custom 93 octane maps, an Off the shelf 93 and 91 octane maps, and the stock map and could change between these by reflashing. These maps had access to change a bunch of parameters , most importantly ignition timing, AFR targets , boost targets, and cam advance. For example my usual tune increased the boost peak by 4-5 psi but needed a cooresponding decrease in timing at peak torque and increased fueling to hit those levels safely without knock. This tune worked flawlessly.


​​ I'm not familiar with ECU remapping in the Audi / VW world, so what parameters other than boost can a piggyback do? It's my understanding that the piggyback intercepts sensor output from the O2 sensor, boost vac sensor and changes what the ECU sees. Does this introduce some latency in the system? What advantage does this have over a flashed ECU tune? The only other tune I saw on here is an APR off the shelf tune, and apparently this can't be flashed or unflashed at will by the end user. Is there anything that works like that for the

Sorry for the noob questions, hope I can get some insight here.
The new ECUs are very adaptive vs the Subaru world ECU and can handle variances very easily with large adaption ranges hence basic piggy backs working very well on them with good results from the simplest ones that just bias boost pressure equally across the rpm range.

Our units are most likely the most advanced available as we have AFR bias, rail pressure biasing, boost control over rpm and adaption for knock running in the back ground. We can see all engine parameters required to run the car efficiently getting similar results to cars that are flashed tuned.

There are several advantages of running our piggy back vs a tune. For one it can be resold after use or possibly moved on to the next car. You have the freedom of fitting it yourself and removing it when you want too. There is boost per gear capability as well as built in logging and fault reading with gauge viewing capability if you go bluetooth. You can optimize the car yourself with it as well as use several maps for different circumstances like E85 mixes etc. Further than that it leaves the ECU untouched for when you want to revert the car back to factory spec.
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Old 09-20-2017, 05:53 AM
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What's the deal with Map 2 - are other supporting mods recommended here, or OK to use on stock A4 - do you have charts showing the difference versus Map 1 (or stock)?
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Old 09-20-2017, 05:57 AM
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Originally Posted by vgt View Post
What's the deal with Map 2 - are other supporting mods recommended here, or OK to use on stock A4 - do you have charts showing the difference versus Map 1 (or stock)?

Map 1 peaks 4.0psi over stock from around 4500rpm. Map 2 peaks 5.4psi from around 5250. Map 2 is similar to the map 6 setting. If guys with 93 want to run it email me data logs to [email protected] and I can see if its ok. In the UK where the temps are lower year round and their fuel quality is slightly better its fine to run.
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