[JeFizz]

Originally Posted by Terry @ BMS

Hybrid turbos sound very interesting for the platform!

On the post IC temp I still need to get a car in here to keep working on that. Worst case I can setup the JB4 to read it off the sensor directly if we can't find CANbus signals for it. Any volunteers who want to lend me your car for a day? Happy to pay for a rental.

Wish I could help out, but I'm in MN. lol

[Terry @ BMS]

Changed IAT to reflect charge air temperature (post intercooler), hopefully. Load up and log V7_T4 to test it out.

[JeFizz]

Originally Posted by Terry @ BMS

Changed IAT to reflect charge air temperature (post intercooler), hopefully. Load up and log V7_T4 to test it out.

nice. I'll check it out.

[BBSBB]

Loaded 7_T5 and made few runs at +1C ambient temp. I also tried logging via Multi ECU Scan via OBD splitter (with JB4 Windows app/USB plug not connected to JB4) yet MES seems to freak out under WOT when logs get jagged. MES IAT temps were in range 37-41, JB4 logs when converted to Celcius : 27-35

MES: Dropbox - 2 MES.csv - Simplify your life

JB4: Dropbox - 211204_0222 ERR.csv - Simplify your life

JB4 (with unit conversions): Dropbox - 211204_0222 ERR.xlsx

[BBSBB]

Hey @Terry, I've recently installed JB4 and did quite of lot of road tests with lots of logs. A few discrepancies with MES caught my eye when comparing MAP0 JB4 logs. Hope it may help you make few fixes.

I have firmware version 29/7//5 (the most recent BETA that I downloaded on December 3).

Here're the issues I've found:
1. Boost and DME_BT seem to be reported incorrectly, from JB4 log it looks like boost target is consistently not met, yet it doesn't seem to be the case. See screenshot
2. MPH reported seems to be lower than the actual speed - when comparing Dragy runs (e.g. 60-130MPH) while Dragy reported time in logs I didn't see MPH go above 130

Here's the log file from the screenshot: 1 - map 0.csv

Unfortunately I was not able to record MES logs with JB4 plugged, though I have a logs from a different day (+8C ambient, JB4 log was made at +1C ambient). Here's the XLS file with MES log: MES, +8C.xlsx.zip

In the XLS file if you scroll right you'll see side by side boost, boost target and MPH values for similar RPM which are reported by MES and JB4, MES absolute pressure in mbar converted to PSIG, as well as KPH to MPH (as well as adjusted to RPM point in JB4 log).

Here're some notes/remarks:
1. In MES the car constantly hits the target boost. Judging by the values in MES I suspect that JB4 is underreporting Boost and might be overreporting boost target.
2. MES and JB4 logs were made on different days and might it be the case that car is malfunctioning and on the day of testing it actually didin't hit the targets? That same day the case has shown better results than without JB4. Yet I don't have MES logs from the exact same day I believe the car is fine which is confirmed by better performance.
3. I don have ECU remap, my Giulia is not stock, same ECU remap was logged by MES and JB4
4. Pay attention to the 5th and 6th row in comparison table, JB4 reports same 98MPH while RPM went up from 5446 to 5628
5. MES has ±0,8 second refresh period, the values in the single rows are not a freeze frame, i.e. it reads values one by one and within one row the might be a discrepancy

On a separate not, JB4 seem to round ignition timing to 0.5, making the rounding finer (e.g. to 0.1) could be a great feature.

I've got tons of logs from MES and now from JB4, happy to assist and provide more info. You can PM me if that is more convenient.

Thanks!

[bhvrdr]

Originally Posted by BBSBB

Hey @Terry, I've recently installed JB4 and did quite of lot of road tests with lots of logs. A few discrepancies with MES caught my eye when comparing MAP0 JB4 logs. Hope it may help you make few fixes.

I have firmware version 29/7//5 (the most recent BETA that I downloaded on December 3).

Here're the issues I've found:
1. Boost and DME_BT seem to be reported incorrectly, from JB4 log it looks like boost target is consistently not met, yet it doesn't seem to be the case. See screenshot Attachment 104815
2. MPH reported seems to be lower than the actual speed - when comparing Dragy runs (e.g. 60-130MPH) while Dragy reported time in logs I didn't see MPH go above 130

Here's the log file from the screenshot: Attachment 104816

Unfortunately I was not able to record MES logs with JB4 plugged, though I have a logs from a different day (+8C ambient, JB4 log was made at +1C ambient). Here's the XLS file with MES log: Attachment 104817

In the XLS file if you scroll right you'll see side by side boost, boost target and MPH values for similar RPM which are reported by MES and JB4, MES absolute pressure in mbar converted to PSIG, as well as KPH to MPH (as well as adjusted to RPM point in JB4 log).

Here're some notes/remarks:
1. In MES the car constantly hits the target boost. Judging by the values in MES I suspect that JB4 is underreporting Boost and might be overreporting boost target.
2. MES and JB4 logs were made on different days and might it be the case that car is malfunctioning and on the day of testing it actually didin't hit the targets? That same day the case has shown better results than without JB4. Yet I don't have MES logs from the exact same day I believe the car is fine which is confirmed by better performance.
3. I don have ECU remap, my Giulia is not stock, same ECU remap was logged by MES and JB4
4. Pay attention to the 5th and 6th row in comparison table, JB4 reports same 98MPH while RPM went up from 5446 to 5628
5. MES has ±0,8 second refresh period, the values in the single rows are not a freeze frame, i.e. it reads values one by one and within one row the might be a discrepancy

On a separate not, JB4 seem to round ignition timing to 0.5, making the rounding finer (e.g. to 0.1) could be a great feature.

I've got tons of logs from MES and now from JB4, happy to assist and provide more info. You can PM me if that is more convenient.

Thanks!

I went out and did controlled condition testing. 5th gear run within 5 minutes of each other and controlled for starting IAT so boost doesnt get impacted by that.

Here are the results:

5th gear pull with stratified IAT on same day / same session

[Terry @ BMS]

On the boost reading we scaled it to a mechanical gauge. Since it's an absolute pressure sensor the reading will vary depending on what ambient pressure the logging tool is using. Next time I have a car handy though I'll take a look.

[sehinger]

Current setup -

2018 Stelvio Ti Sport
GFB Diverter
3" Ragazzon Catback
Sprinter Air filter

It felt strong and I haven't had any CEL's since installing JB4.


Here are some logs after 2 runs today on Map 2. Looking for feedback and areas of improvement.

[bhvrdr]

Originally Posted by sehinger

Current setup -

2018 Stelvio Ti Sport
GFB Diverter
3" Ragazzon Catback
Sprinter Air filter

It felt strong and I haven't had any CEL's since installing JB4.


Here are some logs after 2 runs today on Map 2. Looking for feedback and areas of improvement.

Looks good!

Next time try 5th gear from 2k rpm to redline in manual mode.

[BBSBB]

@Terry, is there a capability to limit boost at higher gears rather then at lower gears as it is possible now?

Giulia 2.0 has lower boost targets at gears 1 through 4, at 5th boost target is maximal and it is typically when CEL occurs. Limmiting boost at gears 5 and above would help with that issue and allow utilizing maximum boost in the widest speed range.

I do understand in the UI of JB4 app (Windows) there's no such field (one can input boost limits for 1st, 2nd and 3rd) though if there's smth to change in a settings file in HEX and run some CMD line tool - I'd be willing to try.

[Terry @ BMS]

Sure we can work up something for that. Post up some logs of what you're referring to.

[BBSBB]

Here's the log:

As you can see, 3rd, 4th, 5th and 6th gears have boost levels going up:

1 211229_0302 100-200.csv.zip

P.S.: Since December I've flashed ±3 firmware beta versions into JB4, though it doesn't seem that CSV log file has firmware version changed.

[Terry @ BMS]

It's not gear that is increasing boost, it's following IAT, since the targeting is load based not boost based. Note when IAT drops at the end boost follows.

[BBSBB]

Originally Posted by Terry @ BMS

It's not gear that is increasing boost, it's following IAT, since the targeting is load based not boost based. Note when IAT drops at the end boost follows.

Makes sense.. Thanks!

[bhvrdr]

Ongoing Hybrid Turbo validation with jb4. Bottom line its going awesome. Avoiding all the issues the tuners have been facing with limiters and wastegate maps trying to tune the hybrid.

Alfa Romeo Giulia 2.0l with 400hp Hybrid Turbo - boost and intake temperatures -- 29psi!!! - YouTube

Alfa Romeo Giulia 2.0l with 400hp Hybrid Turbo - boost and intake temperatures -- 29psi!!! - YouTube

[Terry @ BMS]

Looks like it's coming along nicely!

Normally you'd want to scale off a mechanical pressure gauge, since electrical gauges are subject to variances such as the zero position and voltage scaling...

[BBSBB]

@Terry, thinking of adding BMS WMI to my JB4 on 2.0 Giulia. A few questions:
1. Are there any installs on 2.0 Giulia you know off and can share detail (insights into installing, feedback)?
2. How is the mounting supposed to look like? Where to pot nozzle, what kind of adapter to use etc?
3. Giulia has intercoller mounted on the intake manifold, which means that if nozzle is onstalled before throttle body somewhere on the charge pipe, the nozzle will be spraying in hot area before the IC. On the internet forums people say there's no sense to put WMI nozzle before the IC, yet on 2.0 Gilua there's no other way to install (it doesn't seem there's any room to try and do port injection and have 4 nozzles on the mainfold).
4. JB4 to BMW WMI connection, I beleive it is just 2 control wires going from JB4 brick to WMI (plus 2 power wires coming to WMI pump). Is that right?
5. JB4 setup, using Windows app and Meth tab should be enough to have all configured?
6. Can Map6 be used with WMI?
7. How do I try and test WMI (see whether pump and nozle work OK, connections do not leak) not having everyhting connected and set-up on the car?

[08fordgt]

Hello,
First time posting. I'm Keith. I’ve read through the entire thread. It seems that you guys keep Terry very busy lol. It’s great to see awesome customer service. I just ordered my JB4 and look forward to the gains. I've only had my car, 18 Giulia Ti Sport Q4, for almost 2 months and I've already done EC V2 intake, turbosmart DV, and supersprint sport exhaust. I can't wait to do some acceleration times even though I have the heavy sunroof option.

[08fordgt]

I got my JB4 today. Installed it and I only had time to do a few pulls. First one on map 1 in N mode, 2nd and 3rd in map 2 in N mode, then I remembered to putt it in dynamic on map 2 for the last pull. It's not letting me upload my pictures though.

[todd92]

I just installed a JB4 2022 2.0 Giulia and get dreaded 'Service Electronic Throttle Control" error and also jb4 Bluetooth connect not found?

EDIT: Problem solved, install error. I've installed JB4's on multiple other cars with no issues, but got plugs upside down this time.

[todd92]

Finally got the OBD routed through the grommet. Map 2. Did a quick 5th gear log, 1st got stuck behind traffic, 2nd I shut it down at 100 MPH. Look OK?

[Cannon @ BMS]

Originally Posted by todd92

Finally got the OBD routed through the grommet. Map 2. Did a quick 5th gear log, 1st got stuck behind traffic, 2nd I shut it down at 100 MPH. Look OK?

Please upload the logs CSV files for assistance. Thanks!

[bhvrdr]

Damn that looks great. I assume you can feel quite the difference. Youre doing very well up top.

[todd92]

This difference is dramatic, especially 2500-4000 RPM. I just switched to your MAP 6, I'll do another log soon.

[08fordgt]

Does the jb4_alfa_5 firmware monitor knock on IGN 2-5?
Does alfa_7_T9 have the fix for the rough idle?
Which software should I run?
How exactly do I post a log for someone to review?
When I run Alfa 7 I believe it's showing knock (IGN 2-5 but I'm still getting positive ignition timing IGN 1) even on map 0 but if I run Alfa 5 I get no knock.
Thank you in advance for assistance.
Keith