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Default Stinger 3.3L EWG Connectors - 01-29-2020, 10:33 AM



What are the EWG connectors?

They are optional connections that attach the JB4 to the wastegate actuators on each turbo. By attaching directly in this way the JB4 is able to increase or decrease WGDC in a dynamic way to improve boost targeting. The benefits are increased turbocharge response, ability to correct for under-boost or over-boost conditions, and more top end power as the JB4 is no longer capped by the ECU tuning WGDC limits. The technology is similar to the EWG control for BMW models the JB4 has been using running for many years and includes a PID control loop for smart targeting.

*** NOTE *** If you have p0049 fault codes or a limp mode that gives no boost until car is restarted: You need EWG connectors and to lower FF until the fault/issue does not come up. Normally FF 40 (default is 50) will resolve this issue. If it doesn't then continue to lower in increments of 5 as needed.

Order connectors here: https://www.burgertuning.com/product...d-infiniti-q50



How do I install them?

First they must be attached to the JB4 harness by attaching the wires in to the JB4 connector. Be careful to note the connection points/numbers carefully as mistakes here will lead to fault codes and since the pin require a DSUB removal tool can be tricky to fix. IF you do make a mistake you're better off cutting/splicing the JB4 wires to correct it if you do not have access to or have never used a DSUB removal tool before.

EWG Connector 1:
Blue wire: Pin 19
Purple Wire: Pin 9

EWG Connector 2:
Blue wire: Pin 14
Purple wire: Pin 8

NOTE: Some JB4 harnesses have a green wire routed to spot #9 which is not used for anything but blocks installing the EWG purple wire. If you happen to have a wire running there you can remove it with a DSUB removal tool or easier yet just cut it leaving enough length to splice in the EWG purple wire using a wire nut, butt connector, or any other method. The green wire running back to the JB4 harness doesn't need to be attached to anything and can be left sitting there unused.

Plugging them in to the wastegates:

Stinger Driver side connection:
Connectors are interchangeable and either connector can attach to the driver side. The connection is down by the turbo. You can reach it without removing anything on a cold engine. You may need to use a screwdriver to push the connector down while holding the clip in with your finger.

Stinger Passenger side connection:
Either connector can attach to the passenger side. You'll need to remove the airbox bottom to access the connector which will then be easy to see/reach.

JB4 Settings:

Requires v14+ JB4 firmware

User Adjustment Page:
1) 50 across the board under duty bias. This represents a "neutral" base EWG mapping meaning no WGDC is added or subtracted. The base mapping is shown under the FF curve in logs.
2) FF set to 50, this factor is multiplied by duty bias to globally scale up or down the FF mapping. For cars with over boosting problems lower in increments of 5 as needed.
3) PID gain set to 20, this determines the dynamic WGDC range, how far above or below FF WGDC can go based on boost over/under targeting.
4) Auto Shift Reduction set to 60, this determines how much WGDC is cut during shifts to tune turbine speed change related boost spiking.
5) Stingers models that are flashed should set options bit6 on which will increase DMEBT modeling for more accurate EWG PID control for flashed vehicles.
6) Note JB4 systems older than 2018 may need an updated 2580 chipset (available on our website) for EWG connectors to function properly. If you trigger a 2588 EWG fault that clears until next restart the 2580 needs to be updated.


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Default 01-29-2020, 09:24 PM

Quick example of using the JB4 to manage boost targeting and specifically "over boosting" that will often lead to a limp mode and/or p0049 fault code. Note this only applies to those with EWG connectors installed. If you don't have JB4 EWG connectors installed, none of these settings will do anything. So add EWG if you need to fix an over boost or other boost targeting issue.

The JB4 is running what we refer to as integrated wastegate control on the 3.3L platform, which means the ECU is doing the heavy lifting on boost control with the JB4 dynamically adding or subtracting from the wastegate position to fine tune it. The JB4 controls the wastegates through a PID controller.

WGDC represents the JB4 offset to the wastegate position, which is scaled roughly 0-100 in JB4 logs = -15% to +15% dutycycle. A value of 50 in JB4 logs means no offset at all. Wastegate position refers to the position of the flapper in the turbocharger turbine (exhaust side wheel) which is used to control how fast the turbocharger is spinning.

FFPID (FF) in JB4 logs represents the "base" offset applied (feed forward), which is calculated based on internal JB4 mappings and user tweaked using duty bias by RPM and FF globally. Default values for duty bias are 50 across the board, and default for FF user adjustable is 50 across the board.

PID Gain represents the gain portion of the PID control loop that governs the WGDC output, with ECU_PSI being the process variable and DME_BT being the set point. ECU_PSI is the boost signal sent back to the ECU, DME_BT is the modeled boost target. This basically governs how far above or below FF WGDC is allowed to roam. The larger the number the more WGDC can diverge from FF. The default setting is 20 and generally doesn't need to be changed.

When ECU_PSI goes above DME_BT as have an "over boost" situation which the JB4 reacts to by lowering WGDC to lower boost. When ECU_PSI is below DME_BT we have an "under boost" situation which the JB4 reacts to by raising WGDC to increase boost. It can only raise or lower WGDC a certain amount above or below FF as set by PID gain.

I left a lot of the details out above but wanted to give a little background for those familiar with tuning and PID control specifically as to what is going on behind the scenes.

This is the important part: The one user adjustable FF is setup as a global scaling and can be raised or lowered by the user to scale the entire boost targeting algorithm. So generally speaking if you're over boosting lower FF. If you're under boosting raise FF. We've designed the system so that some under boost is desirable. We can get in to why that is in another post down the road.

Here is a customer log from a car running modified exhaust. He started with FF = 60 (higher than default). Notice WGDC is close to 90, meaning the JB4 is adding a lot of WGDC. And predictably boost is way over target, triggering a limp mode. Note boost was not high enough to trigger a JB4 safety map as he set his JB4 safety system at 24psi.

In the second log that same customer lowered FF to 40, which brought the JB4 down to a neutral level of WGDC, around 50, and this resolved his over boosting problem all together. Just with that one simple JB4 setting change.

There is a lot more complexity to the system but TLDR: If you're over boosting make sure JB4 EWG connectors are installed and lower FF until you stop over boosting. Some customers need to go down to 35, 30, and even 20. If you get to 20 and its still happening then probably something else is wrong and at that point contact me with a log of the issue so I can help you further.
Attached Images
  


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atr1 atr1 is offline
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Default 02-01-2020, 07:52 PM

*** NOTE FROM BMS *** Some JB4 harnesses have a green wire routed to spot #9 which is not used for anything but blocks installing the EWG purple wire. If you happen to have a wire running there you can remove it with a DSUB removal tool or just cut it and splice in the EWG purple wire using a wire nut, butt connector, or any other method. The green wire running back to the JB4 harness doesn't need to be attached to anything and can be left sitting there unused.

I installed the wires yesterday.

Here is a little walkthrough the install for future reference. What you have to remove and how you access the connectors may differ according to your different mods

The harness can't be plugged in the wrong direction,
but since you won't be able to see what you're doing with your hands, identifying where the little protuberance is located will make it easier.





Here is the "A" side (passenger)
It is located just below the turbo inlet, but because of the coolant hose you can't access it without removing the intake piping. Removing the strut bar will also help. Only one arm goes in so I had to do it one-handed.





Here is the "B" side (driver)
It is also under the turbo but there is less stuff around so both hands can be used (one each side of the radiator hoses) and in my case I ony had to remove the intake filter. I recommend doing this side first to get more familiar with the connector.





BTW when removing the connector, you need to press the little end that I highlighed by a circle. Pressing any higher won't do anything else than wasting your patience.



Now that you've successfully connected the harness on the actuators. Here is the JB4 side. (nothing new here, just pictures)







PS: If you have WMI installed, getting all wires through the rubber seal will be a little bit challenging but it is doable.

For the routing of the wires here is how I did.
Since both wires are the same length the one connected to the driver side will be too short to route through the rain wipers line like for the fuel wire, so I've chosen to route it along other hoses in front of the engine. (I added tubing to protect the wires, it is not necessary)







Now that the H/W is in place, time to do some testing.

Hoping this helps.

Last edited by atr1; 03-22-2020 at 03:15 PM.. Reason: Error on the caption
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atr1 atr1 is offline
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Default 02-01-2020, 07:56 PM

Is there a simple way to make these pics smaller?...
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Default 02-02-2020, 07:50 AM

Use a computer


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Default 02-02-2020, 08:41 AM

Quote:
Originally Posted by atr1
Is there a simple way to make these pics smaller?...
Assuming you are using a windows computer, you can scale the picture down in Paint. Just use the scale tool in the options, scale it down to like 40% and use Save As, and select jpg as file type. Easy peasy


2019 Genesis G70 Sport 3.3T AWD
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atr1 atr1 is offline
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Default 02-02-2020, 08:44 AM

I was asking for a simple way not involving reuploading and replacing the link of each picture.
Some forums auto resize pictures (at least the displayed size) to fit the screen or have a feature to display only a thumbnail.
I know how to resize pictures on a computer..
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Default 02-03-2020, 07:08 PM

Got a couple logs with the EWG wires hooked up. One at 50 bias and one at 60 bias Wasn't sure if you wanted logs on this thread or the original JB4
Attached Files
File Type: csv 2020-02-03 19_21_17_Map-8 50 bias.csv (11.8 KB, 532 views)
File Type: csv 2020-02-03 19_26_47_Map-8 60 bias.csv (12.6 KB, 472 views)
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KLR STINGER KLR STINGER is offline
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Default 02-04-2020, 07:26 AM

Were you having throttle cut or overboost spikes before this? logs look pretty solid with no hint of boost spikes.
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Soccerstyle Soccerstyle is offline
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Default 02-04-2020, 07:54 AM

No, not that I have noticed. I think he wanted me in test group cause I have WMI among other mods. Wanted to see what it could do I guess.
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Default 02-04-2020, 10:35 AM

wow this is awesome. Let me know if there is anything I can do to help? Sent you some logs Terry. I was actually getting ready to throw cats on this week as still getting some overboosting at times.
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Default 02-04-2020, 10:38 AM

emailed you some logs terry
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Default 02-05-2020, 05:33 AM

Quote:
Originally Posted by Terry @ BMS
Looks good. Next stop 70 across the board!
Here is a log at 70.
Attached Files
File Type: csv 2020-02-04 22_21_53_Map-8 bias 70.csv (9.6 KB, 506 views)
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KLR STINGER KLR STINGER is offline
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Default 02-05-2020, 06:44 AM

Terry, with EWG control now, could you now move from additive boost to absolute boost targets? Ie, set peak absolute boost values per RPM?
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Default 02-07-2020, 05:54 PM

Quote:
Originally Posted by Soccerstyle
Here is a log at 70.
Looks good, let's try 80 next.


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Home of the JB4 the worlds most popular turbocharged tuning system!

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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Default 02-07-2020, 05:55 PM

Quote:
Originally Posted by KLR STINGER
Terry, with EWG control now, could you now move from additive boost to absolute boost targets? Ie, set peak absolute boost values per RPM?
We still need to find a way to datalog the flash boost target to do absolute maps.


Burger Motorsports
Home of the JB4 the worlds most popular turbocharged tuning system!

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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Default 02-10-2020, 09:41 AM

Nice work on the install guide!
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Default 02-10-2020, 04:35 PM

Starting to work on a PID control system for the EWG control. Those running them can drop me an email if they have time to log the latest firmware.


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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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Default 02-11-2020, 11:30 AM

For those who wonder, my car was always overboosting and now with the latest firmware and settings it is very hard to make it happen. There are still some more tests to do but Terry has made really good progress so far.
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Default 02-11-2020, 12:52 PM

Quote:
Originally Posted by atr1
For those who wonder, my car was always overboosting and now with the latest firmware and settings it is very hard to make it happen. There are still some more tests to do but Terry has made really good progress so far.
I'm really happy with the EWG progress so far, but wish we had a method to add true "DME BT" to the logging channels as that would finally allow absolute boost targets like we offer on BMW models. We'll get there.


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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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KLR STINGER KLR STINGER is offline
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Default 02-11-2020, 01:31 PM

Quote:
Originally Posted by Terry @ BMS
Starting to work on a PID control system for the EWG control. Those running them can drop me an email if they have time to log the latest firmware.
Does the PID control setup remove the ability to manually adjust DC at RPM intervals? like is it adjusting DC based on PID feeback from map sensor?
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Default 02-11-2020, 05:02 PM

Not at all, the user adjustment becomes the feed-forward profile, or in other words, the baseline the PID is operating off of. And then WGDC is the output which will vary based on boost vs. target, or in this case ECU_PSI vs. modeled DMEBT.


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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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KLR STINGER KLR STINGER is offline
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Default 02-11-2020, 05:16 PM

Ah.. ok. That makes sense. Was wondering what the feed control was in the PID.
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Default 02-11-2020, 05:30 PM

For those who installed the EWG connectors how was the sample harness length? Ideally we want to make them both the same length to make manufacturing easier so the passenger side will need to have the slack tip-tied together.


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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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Default 02-12-2020, 08:19 PM

Will there be any benefit to using this set up on a car that still has oem primary cats?
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