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George @ BMS George @ BMS is offline
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Default JB4 information thread for Gen3 VAG Group - 11-14-2017, 06:26 AM

Use subject to terms and conditions posted at http://www.burgertuning.com/terms.html

THIS PART IS LEGAL FOR USE ONLY IN COMPETITION RACING VEHICLES AS DEFINED UNDER CALIFORNIA LAW, AND IS NOT LEGAL FOR USE IN ANY OTHER MOTOR VEHICLE. California law defines a "racing vehicle" as "a competition vehicle not used on public highways." (Calif. Health & Safety Code 39048) This part may only be used on competition racing vehicles operated exclusively on a closed course in conjunction with a sanctioned racing event. Competition-only motor vehicles may not be driven to a racing event on a public highway and must be transported on a trailer or other carrier. USE OF THIS PART IN ANY OTHER VEHICLE MAY SUBJECT YOU TO FINES AND PENALTIES FOR VIOLATION OF FEDERAL AND/OR STATE LAW, WILL VOID YOUR WARRANTY FROM BURGER MOTORSPORTS, INC, AND CAN VOID YOUR VEHICLE'S WARRANTY. It is your responsibility to comply with all applicable federal and state laws relating to use of this part, and Burger Motorsports, Inc hereby disclaims any liability resulting from the failure to use this part in compliance with all applicable federal and state laws.

We would like to introduce users to our latest offering.

The unit is called a JB4 which is the name of our most advanced circuit board with CANbus connection (vehicle data network). It has been tried and tested over many BMW models and it is time for the evolution to start for the VW market.



Upgrade units for JB1 users are available to at this link, both revision 1 and 2 units can be upgraded: http://www.burgertuning.com/vw_audi_...grade_kit.html

Complete JB4 Beta units can be found at this link: http://www.burgertuning.com/vw_volks...JB1_tuner.html

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 and 95 Euro.



Install instructions:
Install instructions can be found here: http://www.burgertuning.com/instruct...B4_install.pdf

JB1 to JB4 update instructions can be found here: http://www.burgertuning.com/instruct..._procedure.pdf
The JB1 to JB4 upgrade kit can be bought here: http://www.burgertuning.com/vw_audi_...grade_kit.html



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: http://www.burgertuning.com/bluetoot...nnect_kit.html



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 http://www.n54tech.com/forums/showthread.php?t=21742

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

[video=youtube;MjQjMWBVve4]https://www.youtube.com/watch?v=MjQjMWBVve4[/video]

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 new firmware it will be added to post 3 here.


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 4.5psi 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. Peak boost is set to 24psi with a taper down to 16psi at redline.

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 5.0psi over stock peak 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 over boosts 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 40 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.



Code and Fault reading: At first release the unit will only be able to read faults in Hex Code and clear them. The next firmware update will bring the translation of the code into the user interface as well as activate the autoclear feature for users with **’s.
For now use E Series N54 in the setting page:



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.

More on logging in post 2

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.

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



FIRMWARE UPDATES

The JB4 firmware is in post #3. To upload it connect to your JB4 unit (Key on but engine not idling). Go to File then Upload firmware and select the saved file from your laptop. If the upload fails try again without disconnected.

For phone apps follow the instructions at this link: http://jb4connectkit.com/store/index...formation_id=8

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 on the 1.8T we can support the IS20 and on the GTI the IS38. On the R any larger frame turbo will require a flash of some sort.


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. 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 VW product has been used over many other brands and developed over a period of time so the development cost is spread over many models.


For any questions feel free to post here or email me George@burgertuning.com for a faster response.


2014 VW Golf 7 R
2014 VW Golf GTI
2015 VW Golf 1.4TSI
2016 Audi 8V RS3

Last edited by George @ BMS; 11-16-2017 at 05:21 AM..
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George @ BMS George @ BMS is offline
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Default 11-14-2017, 06:26 AM

Logging and some stacking information.

The JB4 has full logging capability of most of the parameters we need to optimize the tune.

In order to log the steps are simple:

JB4 must be connected to log. A normal USB extender cable will work to get the wire into the car. This must be connected though to our BMS Data Cable. 3rd and 4th gear logs are preferable and if you plan on send them to me at george@burgertuning.com for analysis please do not send 15minutes of driving.

Go to Data Logging next to File at the top, press Start, do the log then press and display. Do your run then press Stop and Display when you are safely stopped. Then go Export and Export log and save the file to your pc. This file can be reopened for viewing by going Data Logging then open log.

It is suggested once you get a baseline log to familiarize yourself with what you can click to see which value. The log is best to be viewed in the JB4 user interface.
Below is a typical JB4 only log that I have chosen that is a good example to explain everything as a lot of interesting things are happening. The car was run over and over 0-150mph prior to this log, its full bolt on with our meth kit.



I will start explaining each line starting from the top.

Pedal: This redline that is pegged against the top show where your pedal position is. In some logging tools available by other tuners they use this as the throttle so people are accustomed to seeing it full.

Throttle position (orange): The ECU uses throttle position to assist with torque targeting. It is the torque targeting that creates final boost hence us seeing boost level going up in summer months. This results in a floating throttle which is normal to a point. We do not want to see this value go down lower than 4000 which represents 40%. Sudden spike straight down are also a problem that that is usually accompanied with the overboost fault.

Meth (dark green line going all over the place): For guys running our FSB meth system this line represents meth flow. It should be pegged at the top of the graph in a straight line if flow is sufficient. This car has a meth flow issue which is also evident in the IAT values further down.

RPM (green line): It is interesting to keep a eye on the rpm signal. Good to see what wheel spin looks like or if you suspect clutch slip it will create curves instead of being straight.

Trims (light blue): For scaling purposes this is a JB4 calculated value using the OEM trim values and taking into account what we doing to the AFR bias. What we want to do in terms of trims is avoid going higher than 40-45%. If the car reaches this point take a note at what your AFR ratio is doing if its taking a dive you are reaching a fueling ceiling. This will only happen if you use too high a amount of E85 on your mix or you are running too high a boost level. At certain point adding boost does not add power so lower the boost in this case. The fuel is sufficient to max the turbo power wise both for a R and a GTI. If the car is run like this for a sustained run the ECU will throw a lean code Sensor 1 Bank 1 and the JB4 will default to map 4.
You JB4 should ship with a fuel open loop value of 40. The maximum you can go is 60. Increasing the value will lower trim levels by increasing rail pressure. Dropping the value will increase trims values.

Boost (Blue line): This is actual boost

Target (Pink line): This is the boost target requested in the map 6 column. In this case we targeting actual boost values. If you use Map 6 as a boost additive by adding the values you want over the ECU boost the line will be found at the bottom of the graph as shown on the Stacked log below.

ECU PSI (Black): This is the boost value the ECU is requesting and seeing.

AFR (Mustard): Here we have the AFR value. If you have opted not to run the AFR wire to the lambda make sure your Fuel Bias values next to map 6 chart are all set to 0. The JB4 uses a calculation of the Fuel Bias Values and ECU AFR to work out the true value of AFR. You may see spikes in this value on the gearchange which is a calculation delay bug on the JB4 firmware we sorting out so do not be alarmed with this.

On this specific log it is interesting to note that in this log the AFR in 4th gear ranges from 13.2-12.7 which is a happy place for a Direct injection car. Switching to fifth we see the AFR drop to 11.3. It is rather rare for this to happen but I am glad we got it. The ECU has two mechanisms that are built into AFR functionality. One is a EGT (exhaust gas temperature) protection mechanism that dumps fuel when the EGT's get too high and the other is a full boost timer which is triggered if the car has sustained full throttle runs and it also dumps fuel. I think in this case the second one occurred.

IAT (fine turquoise line)
Overall Timing (thin redline) IGN1 on logging page
Timing adaption (different colours but timing adaption event circled in orange) IGN 2, 3, 4, 5 represent cylinder 1, 2, 3, 4

The IAT is in Fahrenheit and to get correct value multiply by 10. So if it show a value of 10 its 100F.
On this log the IAT is sitting close to 100F across the rpm range. Ambients where around 100F as well and the meth not working well is not improving it.

What we need to look at in the IAT is a relationship between overall timing and timing adaption. In general the lower the IAT the more timing the car will run. So if you see your timing is lower than usual compare the IAT's of the previous runs to see if its boost or IAT affecting it. As you increase boost you will see the timing chart start dropping as well. In the mid range it is normal for you not to see any timing but at high rpm it has to pick up. This car in the log has got relatively good timing going up to 10 degrees at peak rpm where boost is running at 20psi. If we raise the boost at peak to 22psi we might see a 5 degree drop of timing and we loose any power gains from the boost increase. Regardless in terms of targeting we do not suggest values higher than 18psi at peak rpm. Anything higher in our findings and the timing offset costs far more than the power gained in boost. From 16-18psi at redline we only seeing a average of 4-5whp so its up to the end user to decide how hard he want to push the turbo. We will obviously find good trends from users over time in this regard as well.
On the log I have circled a timing adaption event in 5th gear. There is a lot of discussion about timing adaption on the Simos ECU and it is a general norm to allow up to -4 degrees. On our side we would prefer it to be kept to a minimum of -2 or less or none at all. The timing adaption can work as a function of torque targeting. In this case in orange it pulled -1.2 degrees in cylinder 1. Looking immediately at the previous gear we can see timing was not affected so this is not a issue. For safety purposes we have logged knock sensor values vs timing pull and in most cases there is no relationship.

Gear: The gear will show you which gear you are in. Works for manual and DSG and Auto. It is nice to look back at it because sometimes its hard to remember what occurred when. Also lets us see on our side when logs are sent if we looking at possible wheel spin or a issue.

Stacking the JB4 over a flash tune:

All the above will apply. With the JB4 connected you will start with a clean slate and log the car in map 4 which is a pass though map with logging capability. This will give you a idea of the state of your tune and show you how it is set and what it is doing.

On the user adjustment page you going to want to make the settings as below:



You will notice the boost safety is set to 30psi. Once you know your final peak boost adjust this value to 2psi over the peak so you can still have the safety feature for boost over run.

The same will apply in terms of what you are looking for in the logs. One variance is that the throttle position will stay mostly open due to the torque values in the tune being higher.

Start adding boost in single digits after your peak boost for starters and see how the car is handling it and what the affects are of the added boost in timing.
Keep a eye on the fuel trims and adjust accordingly in denomination of 5 in the fuel open loop setting
You can have a look at AFR values but they rarely move with stock turbos.
Look at the timing pull values vs overall timing. In some cases if timing pull is present you can start adding the fuel bias at those rpm in values of 5. This will en richen the AFR and in some cases the richer fueling can cool the cylinder enough to increase timing.

Be sure to work with me if you going for large increases or you trying to achieve maximum boost values.

Below is typical log. The car is a GTI APR Stage 2+ IS38 running our meth kit.
In this case you will see the pink target line at the bottom which represents boost add. In this case it is set at 1.8psi over stock. Trims have also been brought down the a fuel open loop setting of 20. This actually also improved the AFR curve in the process.



To control the boost per gear in the case of stacking you will need to add the maximum add you want to allow per gear.

So if you want no added boost in 1st use .1 because 0 disables the feature.


Feel free to ask any questions or email me logs to george@burgertuning.com


2014 VW Golf 7 R
2014 VW Golf GTI
2015 VW Golf 1.4TSI
2016 Audi 8V RS3
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Terry @ BMS's Avatar
Terry @ BMS Terry @ BMS is offline
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Default 11-14-2017, 09:20 AM

Latest VW JB4 firmware attached.

VW_JB4_OBDII_4_T2:

1) Revised fuel mapping for improved drivability and performance.
Attached Files
File Type: hex VW_JB4_OBDII_4_T2.hex (60.6 KB, 1097 views)


Burger Motorsports
Home of the Worlds fastest N20s, N54s, N55s, S55s, N63s, and S63s!

It is the sole responsibility of the purchaser and installer of any BMS part to employ the correct installation techniques required to ensure the proper operation of BMS parts, and BMS disclaims any and all liability for any part failure due to improper installation or use. It is the sole responsibility of the customer to verify that the use of their vehicle and items purchased comply with federal, state and local regulations. BMS claims no legal federal, state or local certification concerning pollution controlled motor vehicles or mandated emissions requirements. BMS products labeled for use only in competition racing vehicles may only be used on competition racing vehicles operated exclusively on a closed course in conjunction with a sanctioned racing event, in accordance with all federal and state laws, and may never be operated on public roads/highways. Please click here for more information on legal requirements related to use of BMS parts.
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MK7GTI MK7GTI is offline
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Default 11-14-2017, 09:33 AM

Quote:
Originally Posted by Terry @ BMS
Reserved for firmware
Do you have any plans for the release? What are the changes?
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George @ BMS George @ BMS is offline
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Default 11-14-2017, 09:57 AM

Quote:
Originally Posted by MK7GTI
Do you have any plans for the release? What are the changes?
It will be up shortly. This one changes part throttle fueling logic allowing for smoother power delivery when not under full load.


2014 VW Golf 7 R
2014 VW Golf GTI
2015 VW Golf 1.4TSI
2016 Audi 8V RS3
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RafaMonteiroo RafaMonteiroo is offline
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Default 11-14-2017, 10:45 AM

Quote:
Originally Posted by George @ BMS
It will be up shortly. This one changes part throttle fueling logic allowing for smoother power delivery when not under full load.
Hi,

@George @Terry

The problem of Overboost in shift gear in the DSG has not been solved in this last FW?

I have some suggestions to make, if possible, in the next updates:

- Correction of Overboost on gearshifts in DSGs (I know this is already solved for next FW.),
- DME codes to DTC with descriptions,
- Possibility to limit the boost to ECU Stock map,
- Cold Start Protection - limits boost at 50% Oil temperature below 50 C, at 51-65 C limits at 75% and above 65 C releases full boost,
- RPM Limiter to create a Vallet or Anti-Theft map.

I think it will be very interesting,

Thank you,

Last edited by RafaMonteiroo; 11-14-2017 at 10:55 AM..
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Terry @ BMS Terry @ BMS is offline
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Default 11-14-2017, 11:33 AM

Quote:
Originally Posted by RafaMonteiroo
Hi,

@George @Terry

The problem of Overboost in shift gear in the DSG has not been solved in this last FW?
On post shift boost control we're working on evaluating that now, but it's not part of the v4 firmware posted.

For the warm up safety it's currently configured to water temperature and set to lock stock low until 160F and to also taper boost if water temp manages to exceed 250F.


Burger Motorsports
Home of the Worlds fastest N20s, N54s, N55s, S55s, N63s, and S63s!

It is the sole responsibility of the purchaser and installer of any BMS part to employ the correct installation techniques required to ensure the proper operation of BMS parts, and BMS disclaims any and all liability for any part failure due to improper installation or use. It is the sole responsibility of the customer to verify that the use of their vehicle and items purchased comply with federal, state and local regulations. BMS claims no legal federal, state or local certification concerning pollution controlled motor vehicles or mandated emissions requirements. BMS products labeled for use only in competition racing vehicles may only be used on competition racing vehicles operated exclusively on a closed course in conjunction with a sanctioned racing event, in accordance with all federal and state laws, and may never be operated on public roads/highways. Please click here for more information on legal requirements related to use of BMS parts.
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PorkchopExpress PorkchopExpress is offline
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Default 11-15-2017, 12:17 PM

Quote:
Originally Posted by Terry @ BMS
On post shift boost control we're working on evaluating that now, but it's not part of the v4 firmware posted.

For the warm up safety it's currently configured to water temperature and set to lock stock low until 160F and to also taper boost if water temp manages to exceed 250F.
Any updates on in dash map switching, gauge high jacking? Also curious if your looking into VW port injection controller, or the ability to run a 4 bar map sensor?
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George @ BMS George @ BMS is offline
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Default 11-15-2017, 01:41 PM

Quote:
Originally Posted by PorkchopExpress
Any updates on in dash map switching, gauge high jacking? Also curious if your looking into VW port injection controller, or the ability to run a 4 bar map sensor?
The gauge high jacking requires a separate board which is cost prohibitive when comparing to the Bluetooth module.
Port injection yes and 4 bar yes.


2014 VW Golf 7 R
2014 VW Golf GTI
2015 VW Golf 1.4TSI
2016 Audi 8V RS3
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RafaMonteiroo RafaMonteiroo is offline
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Default 11-15-2017, 02:31 PM

Quote:
Originally Posted by Terry @ BMS
On post shift boost control we're working on evaluating that now, but it's not part of the v4 firmware posted.

For the warm up safety it's currently configured to water temperature and set to lock stock low until 160F and to also taper boost if water temp manages to exceed 250F.
Nice,

We are waiting for the correction of overboost, in Brazil it occurs quite due to altitude.

Cool, I did not know that water temp protection, it's something.

On other suggestions, if possible to include in a list to study the possibilities of the functions, would be nice, especially the DTC codes.

Another thing, it is not possible to manipulate the IAT so that we can fool the ECU, thus getting more advance ignition timing? Well, with Podium gasoline (102ron) here in Brazil, you have to work on it ...

Thank you.
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Default 11-15-2017, 03:11 PM

We do have that feature on other JB4 models, but we've not configured it for the VW at least not yet. If there is demand we can look in to it though.


Burger Motorsports
Home of the Worlds fastest N20s, N54s, N55s, S55s, N63s, and S63s!

It is the sole responsibility of the purchaser and installer of any BMS part to employ the correct installation techniques required to ensure the proper operation of BMS parts, and BMS disclaims any and all liability for any part failure due to improper installation or use. It is the sole responsibility of the customer to verify that the use of their vehicle and items purchased comply with federal, state and local regulations. BMS claims no legal federal, state or local certification concerning pollution controlled motor vehicles or mandated emissions requirements. BMS products labeled for use only in competition racing vehicles may only be used on competition racing vehicles operated exclusively on a closed course in conjunction with a sanctioned racing event, in accordance with all federal and state laws, and may never be operated on public roads/highways. Please click here for more information on legal requirements related to use of BMS parts.
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RafaMonteiroo RafaMonteiroo is offline
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Default 11-15-2017, 07:03 PM

Very interesting!


2014' VW GTI DSG // Down Pipe 3" // Catback 3 // Intake K&N Inbox OEM Mod // ECU Flashed by Reiko + JB4 Stacked // Turbo IHI IS38
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Default 11-16-2017, 04:29 AM

This function of the IAT change the timing is present in the B58 models of the BMW line.

The ECU of the VAG cars is quite intelligent in relation to octane and IAT to evaluate the timing, but a tuning for this is interesting.You can count on me for testing.
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