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Terry @ BMS's Avatar
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Default 05-20-2020, 06:01 PM

Yes you'll generally make less boost with less barometric pressure, but the ECU will compensate for some of the pumping losses by raising it's boost target slightly.


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Beezupra Beezupra is offline
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Default 05-24-2020, 02:11 PM

Hi Terry

I updated my firmware on my '18 991.2 TTS JB4 as you suggested last week. Now my gauges aren't working correctly. I read the troubleshooting page and other threads, but none of those suggestions helped. Details are:

All gauges and the app worked fine for the past month, up until the moment I updated the firmware, so it doesn't fit to think it is a mechanical connection issue with the OBD2 cable (although I did go ahead and disconnect/reconnect both ends of that cable a couple times anyway).

The only gauge that works correctly is the one showing which map I am on. The other gauges all show no reading, until I apply hard throttle and get boost up. Then the gauges will all flash to life and then immediately "freeze" on a fixed display number. The frozen display will stay the same until the next time I greatly exceed the earlier boost level, then it will again momentarily display and then re-freeze with a higher boost reading.

100% of the time I go to the Read Code option, it says "invalid read, try again?" Then when I return to the gauge display from the read code option, the map gauge goes to no reading/zero, even though it says I am still connected. If I then disconnect/reconnect the BT, the gauges go back to only map gauge reading correct and all others zero.

I have tried force closing the app, and rebooting the iphone, and leaving the car locked overnight with no benefit.

Initially I thought maybe the firmware hadn't succeeded, because after waiitng for the writing blocks, I would return to my iPhone to just see the same screen I started with, with no evidence that anything was finished. This led to re-uploading the firmware several times, but the last two times I observed that if I was watching the screen carefully at the end of the writing blocks step, messages momentarily appeared that said ...verifying checksum.... rebooting JB4.....update complete!...... The last crucial message of "update complete" was visible on the screen for no more than a half-second before it would disappear. Hopefully that is all I am supposed to see after a successful update.

Attached is a brief log I ran while getting on throttle to make the gauges go from zero to the momentary on then frozen values.

Look forward to your advice about getting the gauges working again, thanks.
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File Type: csv 20200522_111807_runs(1).csv (6.2 KB, 80 views)
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(#53)
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Terry @ BMS's Avatar
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Default 05-24-2020, 05:28 PM

Interesting as nothing on the OBDII side changed with the firmware.

If JB4 had no firmware you would not be able to connect at all.

There is a command in there, options bit4, for slower speed CANbus. As a test turn that option on and lets see if it makes any difference.

As another test when data stops press the "purge" button on the WMI page and see if that gets data moving. We have a CANbus reset command in there.


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Beezupra Beezupra is offline
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Default 05-26-2020, 06:29 AM

Bit4 turned on, Purge button tapped, and I tried uninstalling and reinstalling the app. None helped. Now it is not briefly flashing up the frozen values, it is just staying at all gauges zero, except map displays.

Next suggestion?
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Terry @ BMS's Avatar
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Default 05-28-2020, 06:15 PM

Quote:
Originally Posted by Beezupra
Bit4 turned on, Purge button tapped, and I tried uninstalling and reinstalling the app. None helped. Now it is not briefly flashing up the frozen values, it is just staying at all gauges zero, except map displays.

Next suggestion?
Strange seems as if it's not getting any CANbus at all. I wonder if the OBDII cable itself is faulty? Email in and we can replace that for you.


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Beezupra Beezupra is offline
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Default 06-02-2020, 07:28 AM

Quote:
Originally Posted by Terry @ BMS
Email in and we can replace that for you.
First thing last Friday morning I sent email request for new cable to sales@burgertuning.com. Haven't heard back yet, might you be able to check to see if someone is working on it? Thanks!

While I wait for that, might it be worth a try to send me a file for me to reload the prior firmware version that was on my unit when I bought it approx 10 weeks ago? Was working fine with that.
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Ralonso Ralonso is offline
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Default check engine - 06-03-2020, 02:59 PM

hello all,

Everything has been running well with no issues after installing the IDP Plenum and down p.i.p.e.s. i just installed updated intercoolers and after driving for a bit i got a check engine. I tried to check the codes but i get an invalid read. i shut car off, updated firmware and I still have the code and JB4 keeps giving me an invalid read. i cant check the code delete it. Car seems to be running well though. I'm posting a log. Any suggestions on how to get the code read or how to delete it?
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File Type: csv P912_M3_R8_200603_1637.csv (43.1 KB, 66 views)
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Terry @ BMS's Avatar
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Default 06-04-2020, 07:40 PM

It's possible there is a bug with our code reading, I'll look in to that. In the meantime are you able to use an OBDII reader to check the fault? It might just be the expected "emissions efficiency" fault code.

The log itself looks good although I see trims are up there so we'll need to keep an eye on AFR.
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canesfan1986 canesfan1986 is offline
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Default 06-05-2020, 12:01 PM

Hi BMS team,

I recently sent you an email on this, but I thought I'd reach out here in case it would be better. Do you have dyno charts of the JB4 on a 991.2 Turbo S running 93 octane? I've been scouring all the boards and have been unable to find one. Hoping you guys have one handy.

Thanks!
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Default 06-05-2020, 02:02 PM

Recent customer dyno I just saw, not exactly what you're looking for but close: New dyno data, 991.2 TTS w/ JB4 tune - Rennlist - Porsche Discussion Forums

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Default 06-06-2020, 09:25 PM

Found a bug in the latest 911.2 firmware blocking CANbus operation and fixed it in v4 firmware just posted.


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Beezupra Beezupra is offline
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Default 06-09-2020, 03:05 PM

Quote:
Originally Posted by canesfan1986
Do you have dyno charts of the JB4 on a 991.2 Turbo S running 93 octane?
The dyno vid and graph above are mine. You will be able to run Map 3 on 93 octane. Map 3 on my dyno is the thin red line labeled JB4 - 3. There is no 93 where I live, so this chart is on 91 octane and some extra ethanol for a mix of about E30. The peak #s on Map 4 were on a 95 octane mix. My car is stock apart from the JB4 and a Soul Xpipe w/ stock cats.

I was posting above about OBD2 data and gauges not working on my JB4 App, I just loaded the new de-bugged firmware and everything is back to full function.

I'm very pleased with everything about the JB4.
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canesfan1986 canesfan1986 is offline
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Default 06-16-2020, 02:39 PM

Thanks, guys. I placed my order for the JB4 and the wireless connection app just now. I'll be running 93 octane here in South Florida, so I'm looking forward to hopefully making some impressive gains on Map 3. I have a 991.2 (2017) Turbo S.
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Default 06-19-2020, 01:47 PM

Quote:
Originally Posted by canesfan1986
Thanks, guys. I placed my order for the JB4 and the wireless connection app just now. I'll be running 93 octane here in South Florida, so I'm looking forward to hopefully making some impressive gains on Map 3. I have a 991.2 (2017) Turbo S.
You're going to love it!


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Ralonso Ralonso is offline
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Default 06-24-2020, 04:30 PM

Terry,

i downloaded the update but i still get an invalid read whenever i try to read codes. i have a check engine light on now, that just came up . but i cant check it.
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Default 06-25-2020, 08:46 AM

I've had a report of that but been unable to recreate reading code issue in ours. You can also read with a generic code reader short term in the OBDII port.


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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Ralonso Ralonso is offline
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Default 06-25-2020, 11:27 AM

I checked the codes with a code reader and i am getting P0430 and P2262
0430 is since i removed he cats but 2262 is turbo boost pressure not detected. Which worries me. Thoughts?
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Default 06-25-2020, 04:35 PM

Clear it and see how long it takes to come back up but that may indicate a loose connection on the specific sensor.


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Default 07-06-2020, 07:02 PM

Hello. New to the forum and my JB4 should be arriving tomorrow AM. Wanted to make sure I had all the pieces in place before I do the install portion of my JB4 for my 2020 911 C2 (992). Iíve downloaded the JB4 app and also purchased the Bluetooth adapter and plan on connecting the OBDII connection as well.

I scrolled through the firmware files available on the app and didnít see one specific for the 992. Would it be one of the 991 files? Are there any recommendations on threads or other forums that detail custom mapping and everything tuning with the JB4?

Sorry for all the questions and appreciate your input.
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Default 07-07-2020, 10:37 AM

Quote:
Originally Posted by jongchul
Hello. New to the forum and my JB4 should be arriving tomorrow AM. Wanted to make sure I had all the pieces in place before I do the install portion of my JB4 for my 2020 911 C2 (992). Iíve downloaded the JB4 app and also purchased the Bluetooth adapter and plan on connecting the OBDII connection as well.

I scrolled through the firmware files available on the app and didnít see one specific for the 992. Would it be one of the 991 files? Are there any recommendations on threads or other forums that detail custom mapping and everything tuning with the JB4?

Sorry for all the questions and appreciate your input.
Your JB4 will be on the latest firmware and will show up as 991.2 when trying to update. That will be normal as the tune self identifies when connected to the car.


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

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canesfan1986 canesfan1986 is offline
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Default JB4 Connect Kit Issues - 07-27-2020, 03:31 PM

Hi Terry,

So to update, I have just had the JB4 installed into my 991.2 Turbo S, and it all seems to be fine except that my JB4 App cannot get past the ďhandshakeĒ stage of the connection. Could you please let me know what I should do to correct this issue? I tried literally getting right next to the dongle and it still happened.

Thanks.
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Terry @ BMS's Avatar
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Default 07-28-2020, 08:01 AM

Email us terry@burgertuning.com and we can get you in contact with JB4 mobile, perhaps the dongle itself is faulty and needs to be swapped out.


Burger Motorsports
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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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canesfan1986 canesfan1986 is offline
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Default 07-28-2020, 08:15 AM

Quote:
Originally Posted by Terry @ BMS
Email us terry@burgertuning.com and we can get you in contact with JB4 mobile, perhaps the dongle itself is faulty and needs to be swapped out.
Thanks, Terry. I have just sent you an email.
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ryanlsmith ryanlsmith is offline
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Default 09-11-2020, 10:46 PM

Do you have any dynos or ideas of gains on a 992 C2 Base?
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