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Terry @ BMS's Avatar
Terry @ BMS Terry @ BMS is offline
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Default 04-24-2018, 11:41 AM

On the low throttle false alarm boost too low code, try to capture similar driving conditions in a log and we can check that to see why it's triggering.


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Nicoo70 Nicoo70 is offline
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Default 04-24-2018, 11:46 AM

Quote:
Originally Posted by zole2112
I've been getting this code lately on ISO T12 along with a CEL and Drivetrain Malfunction, no limp mode or noticeable difference in power. The last 2 times I got it I was driving on the highway at about 75 mph in 7th and 8th gear. No limp mode, just a CEL and the 108F01 code.

Annoys the hell out of me lol
Similar for me! How do you to correct this problem?
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zole2112 zole2112 is offline
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Default 04-24-2018, 11:48 AM

Quote:
Originally Posted by Nicoo70
Similar for me! How do you to correct this problem?
I don't know how to correct it at this point, it doesn't seem to affect performance at least that I can notice. I've been hoping to log it like Terry asked above. I'll keep trying to catch it in a log then I'll post it.


2013 BMW 335xi F30 N55 PWG
Injen CAI/ER CP/VRSF C-less DPipe/Active A FMIC/JB4 ISO_11 - Map 7/e50/Custom tuned exhaust/stock turbo/Resonator Delete/MHD BEF with JB4 e85/Stage 2 LPFP Walbro 450
Waiting to install: Speedtech BW 8374/PI/MHD BEF and Tune by Trebila
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Nicoo70 Nicoo70 is offline
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Default 04-24-2018, 11:56 AM

It’s very dificult to catch it on a log because he come randomly..
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Nicoo70 Nicoo70 is offline
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Default 04-24-2018, 11:57 AM

Quote:
Originally Posted by zole2112
I don't know how to correct it at this point, it doesn't seem to affect performance at least that I can notice. I've been hoping to log it like Terry asked above. I'll keep trying to catch it in a log then I'll post it.
Itís very dificult to catch it on a log because he come randomly..
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Nicoo70 Nicoo70 is offline
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Default 04-24-2018, 11:59 AM

Quote:
Originally Posted by Nicoo70
Itís very dificult to catch it on a log because he come randomly..
Quote:
Originally Posted by Terry @ BMS
On the low throttle false alarm boost too low code, try to capture similar driving conditions in a log and we can check that to see why it's triggering.
Similar driving condition Even if I have no error code ?
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Yoandry Yoandry is offline
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Default 04-24-2018, 12:19 PM

Quote:
Originally Posted by Nicoo70
Similar driving condition Even if I have no error code ?
I have that for a while now and I posted a log, video and picture on post #979 and nothing. Its is for sure that boost is way under target at certain pedal throttle %.

http://www.n54tech.com/forums/showpo...&postcount=979


F30 PWG PS2 + WMI + MHD Bef/JB4 + VRSF FBO + N20TMAP. MPPK, MPE, MP-Susp, MP-Brakes, 437M, MP-Lip, MP-Diffuser, MP-Spoiler, MP-Rocker Panel, MP-Sills, MP-Pedals, MP-Grille, MP-Mats, IND Reflector.
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Default Looks like some PWG problem - 04-24-2018, 12:24 PM

Hi, my same problem and a log on this condition when low boost (drive train error) lights up, is posted on 21-th April to support forum here:
http://www.n54tech.com/forums/showpo...83&postcount=4
Only difference is that I run BEF and I need to press with light force to the pedal and car should accelerate a bit to get this error. It is very feelable also when there is like no boost (especially when you think it should be there when pedal position is almost to the 50-70%) and then it hits hard from 2500-3000rpm and mostly it is not feelable in whole gear. Sometimes also when making a soft kick down, the speed and RPM-s builds up like on NA engine. Boost builds up not like before without ISO
I am in situation where I think I should try/ buy Stage 2 OTS map from MHD and look how it acts then...


2011 F10 535i M-Sport PWG // Deep sea blue //
//JB4 ISO 10 T13 + BMS BEF PWG1_RACE_3 // M Performance mufflers// 3,5" cless dowpipe
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Default 04-24-2018, 12:24 PM

Quote:
Originally Posted by Yoandry
I have that for a while now and I posted a log, video and picture on post #979 and nothing. Its is for sure that boost is way under target at certain pedal throttle %.

http://www.n54tech.com/forums/showpo...&postcount=979
So I take it the BEF flash didn't take care of it, I was kind of hoping it would even though I will still have the JB4 handling boost.


2013 BMW 335xi F30 N55 PWG
Injen CAI/ER CP/VRSF C-less DPipe/Active A FMIC/JB4 ISO_11 - Map 7/e50/Custom tuned exhaust/stock turbo/Resonator Delete/MHD BEF with JB4 e85/Stage 2 LPFP Walbro 450
Waiting to install: Speedtech BW 8374/PI/MHD BEF and Tune by Trebila
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Nicoo70 Nicoo70 is offline
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Default 04-24-2018, 12:25 PM

Quote:
Originally Posted by Yoandry
I have that for a while now and I posted a log, video and picture on post #979 and nothing. Its is for sure that boost is way under target at certain pedal throttle %.

http://www.n54tech.com/forums/showpo...&postcount=979
Not very reassuring if any solution was not found ..you still have this problem today?
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Nicoo70 Nicoo70 is offline
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Default 04-24-2018, 12:38 PM

Quote:
Originally Posted by siim138
Hi, my same problem and a log on this condition when low boost (drive train error) lights up, is posted on 21-th April to support forum here:
http://www.n54tech.com/forums/showpo...83&postcount=4
Only difference is that I run BEF and I need to press with light force to the pedal and car should accelerate a bit to get this error. It is very feelable also when there is like no boost (especially when you think it should be there when pedal position is almost to the 50-70%) and then it hits hard from 2500-3000rpm and mostly it is not feelable in whole gear. Sometimes also when making a soft kick down, the speed and RPM-s builds up like on NA engine. Boost builds up not like before without ISO
I am in situation where I think I should try/ buy Stage 2 OTS map from MHD and look how it acts then...
So you get error every Time no? I think i should try Stage 2+ OTS TOO..
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Yoandry Yoandry is offline
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Default 04-24-2018, 12:38 PM

Quote:
Originally Posted by siim138
Hi, my same problem and a log on this condition when low boost (drive train error) lights up, is posted on 21-th April to support forum here:
http://www.n54tech.com/forums/showpo...83&postcount=4
Only difference is that I run BEF and I need to press with light force to the pedal and car should accelerate a bit to get this error. It is very feelable also when there is like no boost (especially when you think it should be there when pedal position is almost to the 50-70%) and then it hits hard from 2500-3000rpm and mostly it is not feelable in whole gear. Sometimes also when making a soft kick down, the speed and RPM-s builds up like on NA engine. Boost builds up not like before without ISO
I am in situation where I think I should try/ buy Stage 2 OTS map from MHD and look how it acts then...
Pretty much what it is. I didn't have this issue with just regular jb4. Iso is doing something wrong.

Quote:
Originally Posted by zole2112
So I take it the BEF flash didn't take care of it, I was kind of hoping it would even though I will still have the JB4 handling boost.
Nope, it didn't.

Quote:
Originally Posted by Nicoo70
Not very reassuring if any solution was not found ..you still have this problem today?
Yes, is still happening. I just delete the cel when pop up and I know it wont happen again till you restart the car.
Hopefully Terry can come up with a solution on this. We need more aggressive pedal throttle to build up more boost on normal driving. Its technically boosting 1.2 to 2psi around 50% pedal, not good of course.


F30 PWG PS2 + WMI + MHD Bef/JB4 + VRSF FBO + N20TMAP. MPPK, MPE, MP-Susp, MP-Brakes, 437M, MP-Lip, MP-Diffuser, MP-Spoiler, MP-Rocker Panel, MP-Sills, MP-Pedals, MP-Grille, MP-Mats, IND Reflector.
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Nicoo70 Nicoo70 is offline
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Default 04-24-2018, 12:45 PM

Quote:
Originally Posted by Yoandry
Pretty much what it is. I didn't have this issue with just regular jb4. Iso is doing something wrong.



Nope, it didn't.



Yes, is still happening. I just delete the cel when pop up and I know it wont happen again till you restart the car.
Hopefully Terry can come up with a solution on this. We need more aggressive pedal throttle to build up more boost on normal driving. Its technically boosting 1.2 to 2psi around 50% pedal, not good of course.

If its not good , we dont have solution ... :/
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Default 04-24-2018, 01:25 PM

Quote:
Originally Posted by Nicoo70
So you get error every Time no? I think i should try Stage 2+ OTS TOO..
Hi Nicoo70 and Yoandry, at least we are in the same boat with this problem

But yes, when I want this error to be appeared then I can aprox 1 time of 5 to get this on screen. But only in specific gear, RPM and throttel response and position.
When driving in Sport on Sport + or even in Comfort BUT making some pulls and harder driving (gears in higher RPM range and changing quickly) then it is harder to get this drive train error.

IN FACT: While I didn't know that for BEF the ISO upgrade is needed, I was able to drive some days without ISO and I made Stage 0 MHD and after that added BEF and ist felt just amazing! Only on higher speeds (over 160km/h) I got some times low boost error and so I asked for help and so I get my way to ISO. That didn't disturbed me so much as now the more bad symptoms with ISO.


2011 F10 535i M-Sport PWG // Deep sea blue //
//JB4 ISO 10 T13 + BMS BEF PWG1_RACE_3 // M Performance mufflers// 3,5" cless dowpipe

Last edited by siim138; 04-24-2018 at 01:34 PM..
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Default 04-24-2018, 01:38 PM

Quote:
Originally Posted by siim138
Hi Nicoo70 and Yoandry, at least we are in the same boat with this problem

But yes, when I want this error to be appeared then I can aprox 1 time of 5 to get this on screen. But only in specific gear, RPM and throttel response and position.
When driving in Sport on Sport + or even in Comfort BUT making some pulls and harder driving (gears in higher RPM range and changing quickly) then it is harder to get this drive train error.

IN FACT: While I didn't know that for BEF the ISO upgrade is needed, I was able to drive some days without ISO and I made Stage 0 MHD and after that added BEF and ist felt just amazing! Only on higher speeds (over 160km/h) I got some times low boost error and so I asked for help and so I get my way to ISO. That didn't disturbed me so much as now the more bad symptoms with ISO.
So you advise us to use the BEF?
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Default 04-24-2018, 01:51 PM

In my case car felt very good in regular JB4 ( N55_FSERIES_OBDII_PWG_11_T1.hex) + BEF (PWG1_RACE_1c) than now with JB4 ISO (N55_FSERIES_OBDII_ISO_10_T13.hex ) + BEF (PWG1_RACE_1c)


2011 F10 535i M-Sport PWG // Deep sea blue //
//JB4 ISO 10 T13 + BMS BEF PWG1_RACE_3 // M Performance mufflers// 3,5" cless dowpipe
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Nicoo70 Nicoo70 is offline
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Default 04-24-2018, 02:01 PM

But always this problem of boost error with the BEF?
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Terry @ BMS's Avatar
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Default 04-24-2018, 03:37 PM

Boost under target is a general problem that will be best resolved by deleting it from the BEF as soon as MHD makes that option available to us.


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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zole2112 zole2112 is offline
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Default 04-25-2018, 10:44 AM

Quote:
Originally Posted by Terry @ BMS
Boost under target is a general problem that will be best resolved by deleting it from the BEF as soon as MHD makes that option available to us.
that will eliminate my current cause of the Drivetrain Malfunctions, that would be nice.


2013 BMW 335xi F30 N55 PWG
Injen CAI/ER CP/VRSF C-less DPipe/Active A FMIC/JB4 ISO_11 - Map 7/e50/Custom tuned exhaust/stock turbo/Resonator Delete/MHD BEF with JB4 e85/Stage 2 LPFP Walbro 450
Waiting to install: Speedtech BW 8374/PI/MHD BEF and Tune by Trebila
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Default 04-25-2018, 04:48 PM

Quote:
Originally Posted by Terry @ BMS
Boost under target is a general problem that will be best resolved by deleting it from the BEF as soon as MHD makes that option available to us.
Hopefully, but we didn't have this issue before ISO on just jb4.


F30 PWG PS2 + WMI + MHD Bef/JB4 + VRSF FBO + N20TMAP. MPPK, MPE, MP-Susp, MP-Brakes, 437M, MP-Lip, MP-Diffuser, MP-Spoiler, MP-Rocker Panel, MP-Sills, MP-Pedals, MP-Grille, MP-Mats, IND Reflector.
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Default 04-26-2018, 11:08 AM

Quote:
Originally Posted by WaqasRiyami
Terry I remember you told me that if you were
EWG you can use ( JB4 in Map4 ) + MHD OTS
But in PWG it's a different storey. And its better not to do it.

Am i Right ?? Or you can use JB4 + MHD OTS in any Car ??
Last nite I tried to run an MHD map with JB4 in map 0 and forget it, AFR going erratic and 3 psi boost max. Maybe because the boost control diode is cut it's no longer possible to run sans JB4 unless it's completely removed. It would be nice to get a straight answer on this.


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Default 04-26-2018, 11:12 AM

Can we just connect the boost solenoid back to the OEM harness and call it good? Would like to keep code delete on the fly as well as monitoring and logging with the JB4 as well as future PMI.


VRSF Chargepipe, BMS Performance Intake
BAVAUTO Hi Perf Coils, NGK 95770 plugs (colder)
GFB DV+, VRSF 3.5" **, Wagner FMIC, MHD Map E85 2+
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neejay neejay is offline
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Default 04-26-2018, 07:01 PM

I've been contemplating the MHD BEF, but I'd feel better buying a fmic first. I just can't afford the $900 Wagner with a kid due in a few months, and there's still no other options for the F10 for some reason...smh.

2 logs attached, I appreciate the feedback!


2011 535i M-Sport - BEF via JB4/MHD, VRSF Chargepipe, BMS Intake, Megan Supremo Exhaust
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siim138 siim138 is offline
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Default FUD number for PWG F10 535i - 04-27-2018, 12:13 AM

Please could somebody confirm:

(F10 2011 535i )What is the correct FUD when BC button enabled, WG adaption disabled and BEF option in ON position? Mine shows nr 66 at the moment there on FUD row.
I just want to be sure if all are set perfectly for BEF?
Low boost error still kicking in and boost build up is still not smooth, its usually hardly kicks in at ~3K rpm and sometimes still nothing to feel till do the end of RPM range. Hopefully those repaired BEF or ISO changes come in near weeks!

Thanks,

Siim


2011 F10 535i M-Sport PWG // Deep sea blue //
//JB4 ISO 10 T13 + BMS BEF PWG1_RACE_3 // M Performance mufflers// 3,5" cless dowpipe

Last edited by siim138; 04-27-2018 at 04:00 AM..
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listed5 listed5 is offline
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Default 05-01-2018, 06:44 AM

Quote:
Originally Posted by tcabill
Quote:
Originally Posted by WaqasRiyami
Terry I remember you told me that if you were
EWG you can use ( JB4 in Map4 ) + MHD OTS
But in PWG it's a different storey. And its better not to do it.

Am i Right ?? Or you can use JB4 + MHD OTS in any Car ??
Last nite I tried to run an MHD map with JB4 in map 0 and forget it, AFR going erratic and 3 psi boost max. Maybe because the boost control diode is cut it's no longer possible to run sans JB4 unless it's completely removed. It would be nice to get a straight answer on this.
If you have ISO, you cannot use map zero without switching the wastegate wires back to factory; as nothing will be regulating waste gate control. You CAN however, use map 4 which is just a pass-through map.
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