E90Post
 


N54Tuning.com
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N55 Turbo Engine Tuning and Exhaust Modifications - 335i Tuning > JB4 Hijacked boost gauge shows >30 psi...what's going on?



Reply
 
Thread Tools Search this Thread
      08-20-2016, 06:12 PM   #1
sebringsc
Private
4
Rep
55
Posts

Drives: 2011 335i xdrive
Join Date: Jun 2015
Location: lake villa, IL

iTrader: (0)

JB4 Hijacked boost gauge shows >30 psi...what's going on?

About 2 weeks ago my hijacked fuel gauge started acting weird, as in it shows that I am getting >30psi boost. I'm not sure what is going on but prior to noticing this problem, everything seemed to be normal, as in I usually got between 10-13psi WOT and <5 just cruising. Now I'm at about 10-15 just cruising and >30 WOT.

I haven't touched any settings in weeks, all JB4 setting are the same as they were prior to this issue. Current mods include:

JB4 set to Map 1 set to 2-1 (boost on fuel) and autoclear
Flex fuel wires (currently not using)
ER Chargepipe
catless DP
io2 simulator

I'm working on getting this logged but I don't have a laptop to do it on.

My current thought is that my boost solenoid is bad but I do not have a vacuum gauge to measure. Anyone have any other suggestions? Is this something to worry about or is possible that my JB4 is just having some issue with perhaps the io2 sim since they are both modifying the DME?

I've also included a link to a video of what I'm experiencing. Any help would be greatly appreciated.

https://youtu.be/9_-XtQOv6No
Appreciate 0
      08-22-2016, 08:57 PM   #2
sebringsc
Private
4
Rep
55
Posts

Drives: 2011 335i xdrive
Join Date: Jun 2015
Location: lake villa, IL

iTrader: (0)

Anyone have suggestions?
Appreciate 0
      08-23-2016, 11:17 AM   #3
M.a.r.k.u.s
Captain
United_States
119
Rep
775
Posts

Drives: '16 M3 ZCP
Join Date: Mar 2014
Location: Seattle

iTrader: (1)

Garage List
Quote:
Originally Posted by sebringsc
About 2 weeks ago my hijacked fuel gauge started acting weird, as in it shows that I am getting >30psi boost. I'm not sure what is going on but prior to noticing this problem, everything seemed to be normal, as in I usually got between 10-13psi WOT and <5 just cruising. Now I'm at about 10-15 just cruising and >30 WOT.

I haven't touched any settings in weeks, all JB4 setting are the same as they were prior to this issue. Current mods include:

JB4 set to Map 1 set to 2-1 (boost on fuel) and autoclear
Flex fuel wires (currently not using)
ER Chargepipe
catless DP
io2 simulator

I'm working on getting this logged but I don't have a laptop to do it on.

My current thought is that my boost solenoid is bad but I do not have a vacuum gauge to measure. Anyone have any other suggestions? Is this something to worry about or is possible that my JB4 is just having some issue with perhaps the io2 sim since they are both modifying the DME?

I've also included a link to a video of what I'm experiencing. Any help would be greatly appreciated.

https://youtu.be/9_-XtQOv6No
You might try double checking your jb4 settings to make sure it's not set for the 3.5 tmap somehow. I think if the boost solenoid was bad you'd feel it.
__________________
2016 SO M3 ZCP

2013 Audi Allroad
Appreciate 0
      08-23-2016, 02:00 PM   #4
Rahim e92
Second Lieutenant
Rahim e92's Avatar
14
Rep
234
Posts

Drives: 2011 BMW 335i xDrive
Join Date: Feb 2015
Location: Potomac, MD

iTrader: (0)

Have you tried option 1/5 on the jb4 to reset the gauge cluster?
Appreciate 0
      08-23-2016, 06:10 PM   #5
bNks334
Captain
bNks334's Avatar
132
Rep
744
Posts

Drives: '11 135i (N55)
Join Date: May 2014
Location: New York

iTrader: (1)

Your simulator doesn't modify the dme.

Are you sure you're not seeing that number upon shifting? That would be a false positive readout...

Don't you have a boost limit set? If so, you should never be boosting that high without the jb4 going into limp. Honestly your ecu shouldn't be letting you overboost either, but we all know the jb4 prevents the ecu from keeping the engine safe properly.
Appreciate 0
      08-23-2016, 09:28 PM   #6
OneMoreAlex
Private First Class
OneMoreAlex's Avatar
16
Rep
158
Posts

Drives: 2012 e92 335i
Join Date: Aug 2015
Location: Long Island, NY

iTrader: (0)

Quote:
Originally Posted by Rahim e92 View Post
Have you tried option 1/5 on the jb4 to reset the gauge cluster?
+1 do this
__________________
12' 335i
| BMS Intake | CP-E CP | JB4 | VRSF DP | ALPINA B3 |
Appreciate 0
      08-26-2016, 10:29 AM   #7
sebringsc
Private
4
Rep
55
Posts

Drives: 2011 335i xdrive
Join Date: Jun 2015
Location: lake villa, IL

iTrader: (0)

Thanks for the replies. I tried to reset the gauge cluster and that didn't work. I also then set it to my specific vehicle, that didn't work either. What seems to work is disabling the boost on the fuel gauge and enabling it on the oil temp gauge. When I enable it on the oil temp gauge, it works fine.
So I'm not sure what is wrong with my fuel gauge but at least I know my boost isn't really as bad as I thought...I was quite worried I was going to have yet another problem with this car.
Appreciate 0
Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -4. The time now is 06:14 AM.




e90post
e90post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST