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Default Over boost then half engine light, anybody have ideas? - 01-12-2017, 08:45 AM

2007 335i with JB4

Map 0, all good , target is 8 or so and it's exactly there....no problem

Map 1, says it should be a 13.5lb map but hits 17 and half engine light and back down to stock boost.

Map 2, should be a 14.5 target but logs show it calling for 17, and it hit 21.7 this morning, half engine lights.

The only codes that come up AR over boost and cut engine power.

Stock turbos and waste gates
Charge pipe with Tial bov, did this mod after the over boosting
******* ********
JB4 5
Dci
New plugs and injectors

Never had any issues until the JB4, with blue tooth adapter so I could log.

Here is a map from this morning, map 2

https://postimg.org/image/qfcra3ikp/
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JayJ JayJ is offline
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Default 01-12-2017, 09:33 AM

You will need to post the csv file of your log. Maybe also post a screen shot of your user adjustments. Is there a flash on? What setting / value is in dash menu 4 set to?

Once you have posted the above info, I'm sure the knowledgeable ones will revert back with some assistance.
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Terry @ BMS Terry @ BMS is offline
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Default 01-12-2017, 10:27 AM

JB4 CSV log required for tuning advice.


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 01-12-2017, 11:09 AM

I have full csv files on the 21.7lb on map 2 and a cvs file on 4 that ran great at about 8.5 psi and no lights
........ I need to email them because I can't shrink them down enough for the whole files to be clear. Where can I send them
Also you're kinda losing me asking is there a flash on and what values map 4 are set to, the serring s reen is pretty much all black wit no number or valuse unless you click on one...please juse be a ltitle more descriptive so i know what youwant and eh where it is......I just got the jb4 G5 and with no intructions...... are there certain specific items on the setting pages you need that I can screenshot? Sorry, I'm trying to learn this.

Last edited by qwiktim; 01-12-2017 at 11:23 AM..
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wjjkoevoets wjjkoevoets is offline
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Default 01-12-2017, 11:30 AM

Quote:
Originally Posted by qwiktim
I have full csv files on the 21.7lb on map 2 and a cvs file on 4 that ran great at about 8.5 psi and no lights
........ I need to email them because I can't shrink them down enough for the whole files to be clear. Where can I send them
Also you're kinda losing me asking is there a flash on and what values map 4 are set to, the serring s reen is pretty much all black wit no number or valuse unless you click on one...please juse be a ltitle more descriptive so i know what youwant and eh where it is......I just got the jb4 G5 and with no intructions...... are there certain specific items on the setting pages you need that I can screenshot? Sorry, I'm trying to learn this.
Relax, we all have to start somewhere

You shouldn't have to edit the files (actually, don't touch them at all and upload them as-is so Terry and others can check properly). You can attach them here using the forum's attachment manager.

The focus will be on WOT parts of your logs anyways. the rest is usually ignored as it's not really relevant. I can't imagine your logs being over 1MB in size.


BMW ///M235i (EBII) - JB4 - BM3 - One sneaky Wagner high flow boi - ER CP - ER TIC CP - CSF FMIC - GFB DV+ - Pure Inlet - K&N Drop-in AF - MPE

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Default 01-12-2017, 11:33 AM

Sorry, I bought this car 6 months ago and had zero problems until this mod.....frustrated and apologize
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Default 01-12-2017, 11:40 AM

Quote:
Originally Posted by qwiktim
Sorry, I bought this car 6 months ago and had zero problems until this mod.....frustrated and apologize
No problem.

The logs will allow us to see parameters which usually give insight as to what the problem might be, hence the heavy focus on them. Let us know if you experience problems uploading the logs to the forum.


BMW ///M235i (EBII) - JB4 - BM3 - One sneaky Wagner high flow boi - ER CP - ER TIC CP - CSF FMIC - GFB DV+ - Pure Inlet - K&N Drop-in AF - MPE

Proud ex-owner of an:
MG TF 135 - 80th Anniversary Edition (Starlight Silver) - Stock
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Default 01-12-2017, 11:56 AM

See if these worked...and I fought this unit used so I don't know if anyone messed with it.....
Attached Files
File Type: csv 2017-01-12 12_10_24.csv (15.2 KB, 95 views)
File Type: csv 2017-01-12 09_50_17.csv (52.7 KB, 123 views)
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Default 01-12-2017, 12:25 PM

Quote:
Originally Posted by qwiktim
See if these worked...and I fought this unit used so I don't know if anyone messed with it.....
The format of the uploaded logs look good. Before I start, I would like to suggest waiting for Terry to chime in. I have an F-series car, which differs quite a bit from the E-series.

I think the problem is obvious:


The difference between FF and PWM is HUGE. PWM will try to stay close to FF. Higher PWM (oversimplified) means more boost and since PWM is trying to stay close to a FF that is set WAY too high, you get overboost. Ideally, the FF and PWM lines should be identical.

My advice?
1. Wait for Terry or someone else to confirm this or correct me
2. Lower your FF parameter (I'd start with 60, others might give better ideas)

The JB4 automatically adjusts the FF parameter, but if it came from a car where FF being over 100 was required for proper boost and you're placing it in a car that can do with something like 60, you're going to have a bad time :P

EDIT: As a reference, here's my FF/PWM curve which is almost as it should be (FF is too low at high RPM due to poor duty bias settings, but you get the idea):


BMW ///M235i (EBII) - JB4 - BM3 - One sneaky Wagner high flow boi - ER CP - ER TIC CP - CSF FMIC - GFB DV+ - Pure Inlet - K&N Drop-in AF - MPE

Proud ex-owner of an:
MG TF 135 - 80th Anniversary Edition (Starlight Silver) - Stock

Last edited by wjjkoevoets; 01-12-2017 at 12:31 PM..
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Default 01-12-2017, 12:40 PM

While we wait, what is FG and PMW and where are they adjusted from.... I see nothing like that in setting.....
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Default 01-12-2017, 12:43 PM

Quote:
Originally Posted by qwiktim
While we wait, what is FG and PMW and where are they adjusted from.... I see nothing like that in setting.....
In my JB4 app it's called "FF/Wastegate Adaption".

EDIT: To clarify, you can't actually directly edit the PWM value. You sort of control PWM with your FF value, because PWM will try to stay close to the FF curve.


BMW ///M235i (EBII) - JB4 - BM3 - One sneaky Wagner high flow boi - ER CP - ER TIC CP - CSF FMIC - GFB DV+ - Pure Inlet - K&N Drop-in AF - MPE

Proud ex-owner of an:
MG TF 135 - 80th Anniversary Edition (Starlight Silver) - Stock
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Default 01-12-2017, 02:23 PM

Gotcha........if I have to adjust.....where do I do that, because on my settings pages there is nothing like that.
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Default 01-12-2017, 02:27 PM

Quote:
Originally Posted by qwiktim
Gotcha........if I have to adjust.....where do I do that, because on my settings pages there is nothing like that.
Sorry, could you perhaps post a screenshot of your settings page?


BMW ///M235i (EBII) - JB4 - BM3 - One sneaky Wagner high flow boi - ER CP - ER TIC CP - CSF FMIC - GFB DV+ - Pure Inlet - K&N Drop-in AF - MPE

Proud ex-owner of an:
MG TF 135 - 80th Anniversary Edition (Starlight Silver) - Stock
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Default 01-12-2017, 02:46 PM

They may not be in order but it took 4 screens shots to get it all in

https://postimg.org/image/6xgbc1pg1/22fba22c/

https://postimg.org/image/miq0clzxt/dbf385a8/

https://postimg.org/image/9tro9yv21/d415ebff/

https://postimg.org/image/wj2wwysxj/12e65c42/

Last edited by qwiktim; 01-12-2017 at 02:58 PM..
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wjjkoevoets wjjkoevoets is offline
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Default 01-12-2017, 02:56 PM

Sorry, should have been more clear. You can find the FF option in the "User Adjustment" section. Your phone will have to be connected to the JB4 to save the settings.


BMW ///M235i (EBII) - JB4 - BM3 - One sneaky Wagner high flow boi - ER CP - ER TIC CP - CSF FMIC - GFB DV+ - Pure Inlet - K&N Drop-in AF - MPE

Proud ex-owner of an:
MG TF 135 - 80th Anniversary Edition (Starlight Silver) - Stock
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Default 01-12-2017, 03:02 PM

Found it!!! So it looks pretty high at 114


https://postimg.org/image/lzihmlonz/6e0fa86c/


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Default 01-12-2017, 03:17 PM

Quote:
Originally Posted by qwiktim
Found it!!! So it looks pretty high at 114


https://postimg.org/image/lzihmlonz/6e0fa86c/
Yeah, this doesn't necessarily indicate a problem, the current value is just not suited for your car.

You need to lower this value (ex.: 60) to get your FF curve down.

With the current value being high, your PWM line is WAY below the FF line in the graph, because the JB4 knows it's pushing way too much boost. But PWM is not allowed by design to deviate too far from your FF line in order to keep boost down. So we need to drag the FF line down to less ungodly values so PWM can stay as close as possible to FF. Enough to meet boost targets and not too high to overboost.

Setting it to 60 may even result in underboost (i.e. your PWM line will constantly be higher than your FF line --> refer to my graph at high RPMs, PWM is higher than FF = underboost), but you can the tinker with FF to find the optimal value. Alternatively, if it's underboosting due to too low FF, you can do multiple runs and wait for the JB4 to "learn" the FF to its optimal level


BMW ///M235i (EBII) - JB4 - BM3 - One sneaky Wagner high flow boi - ER CP - ER TIC CP - CSF FMIC - GFB DV+ - Pure Inlet - K&N Drop-in AF - MPE

Proud ex-owner of an:
MG TF 135 - 80th Anniversary Edition (Starlight Silver) - Stock
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Default 01-12-2017, 03:25 PM

Thank you so much, I'll change that value and make a map 2 pull and log it.

One more question.......9 out of 10 or more when I start the car thwn hit connect on the jb4 on my phone, hit connect, it goes through the whole connecting and handshake deal but no displays show up.......it will read codes, but gives me no gauges or logging ability.........problem 2
...... sorry but greatly appreciate the help


2007 n54 335i
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Default 01-12-2017, 03:30 PM

Quote:
Originally Posted by qwiktim
Thank you so much, I'll change that value and make a map 2 pull and log it.

One more question.......9 out of 10 or more when I start the jb4 on my phone, hit connect, it goes through the whole connecting and handshake deal but no displays show up.......it will read codes, but gives me no gauges or logging ability.........problem 2
...... sorry but greatly appreciate the help
No problem, again, I understand your frustration. You bought something thinking it would make the car go faster, not have it throw malfunction error messages at you and make the car go into limp mode

I am sorry, I'm afraid that is something I can't answer as I've never had the problem myself. That's something the folks from BMS will have to answer for you. Maybe you could verify if you have the latest JB4 firmware on your JB4 and update it via Bluetooth if it's an older version. May fix some other "invisible issues" as well in the process.

When you do get it working in the meantime: looking forward to your new logs!


BMW ///M235i (EBII) - JB4 - BM3 - One sneaky Wagner high flow boi - ER CP - ER TIC CP - CSF FMIC - GFB DV+ - Pure Inlet - K&N Drop-in AF - MPE

Proud ex-owner of an:
MG TF 135 - 80th Anniversary Edition (Starlight Silver) - Stock
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Default 01-13-2017, 07:27 AM

https://postimg.org/image/dvd6dknrz/75a44af1/

Screens shot of where it is all set as of now


2007 n54 335i

Last edited by qwiktim; 01-13-2017 at 07:41 AM..
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Default 01-13-2017, 07:46 AM

I have 4 csv files from this morning tithe surging boost, above and below target....
Attached Files
File Type: csv 2017-01-12 12_10_24.csv (15.2 KB, 94 views)
File Type: csv 2017-01-12 09_40_10.csv (9.6 KB, 96 views)


2007 n54 335i
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Default 01-13-2017, 07:48 AM

I have 4 csv files from this morning with surging boost, above and below target....
Attached Files
File Type: csv 2017-01-13 08_54_23.csv (7.8 KB, 105 views)
File Type: csv 2017-01-13 08_52_23.csv (11.0 KB, 107 views)


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Default 01-13-2017, 07:56 AM

Quote:
Originally Posted by qwiktim
https://postimg.org/image/dvd6dknrz/75a44af1/

Screens shot of where it is all set as of now
EDIT2: Ignore what I previously posted, let's try again

So the logs look better, but 2nd gear is not a very good gear to test. If possible, try doing a 4th gear log from 2000 - redline (slowly push the pedal to 100% so you're not strangling your turbos at low rpm). I've also found 5th gear better for tweaking, but I understand this is not always possible

Try setting PID Gain to 10 (limits the amount of deviation allowed between the FF and PWM curves).


BMW ///M235i (EBII) - JB4 - BM3 - One sneaky Wagner high flow boi - ER CP - ER TIC CP - CSF FMIC - GFB DV+ - Pure Inlet - K&N Drop-in AF - MPE

Proud ex-owner of an:
MG TF 135 - 80th Anniversary Edition (Starlight Silver) - Stock

Last edited by wjjkoevoets; 01-13-2017 at 08:04 AM..
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Default 01-13-2017, 07:59 AM

Thanks, tell me if the logs come up..... I've been trying to get the posted for about and keep getting errors


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Default 01-13-2017, 08:02 AM

FYI, here is a link to Terry's lesson on adjusting the relationship between FF and duty bias for the sake of boost control:

http://www.n54tech.com/forums/showthread.php?t=29893



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