E90Post
 


 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N55 Turbo Engine Tuning and Exhaust Modifications - 335i Tuning > Under boost targets



Reply
 
Thread Tools Search this Thread
      09-10-2018, 09:35 PM   #1
Soden82
Major
United_States
476
Rep
1,188
Posts

Drives: 2011 BMW M3
Join Date: Jun 2017
Location: Boston

iTrader: (1)

Garage List
2011 BMW M3  [0.00]
Under boost targets

Hi guys, just wondering if someone could take a look at a log for me. Car is a 11' FBO and JB4 w/ MHD BEF. Seems to be undercutting boost targets by a good 2-3psi. Happens in every gear I log in.

Updated my jb4 to the latest firmware about 2 months ago. Did I need to do anything with the diode before I updated? Not sure what board I have, but purchased the jb4 6/17. Trying to figure out if it's a hardware issue or just something with the jb4 and/or BEF.

https://datazap.me/u/msoden82/bmw-n5...0&data=1-4
__________________
2009 BMW 335i 6MT
*big single (eventually)*
For now...
MHD tuned
VRSF Race IC
DCI
ATM exhaust
Appreciate 0
      09-10-2018, 09:52 PM   #2
Johnny Boost
Colonel
No_Country
324
Rep
2,013
Posts

Drives: '21 M850i GC
Join Date: May 2013
Location: TBD

iTrader: (0)

Quote:
Originally Posted by Soden82 View Post
Hi guys, just wondering if someone could take a look at a log for me. Car is a 11' FBO and JB4 w/ MHD BEF. Seems to be undercutting boost targets by a good 2-3psi. Happens in every gear I log in.

Updated my jb4 to the latest firmware about 2 months ago. Did I need to do anything with the diode before I updated? Not sure what board I have, but purchased the jb4 6/17. Trying to figure out if it's a hardware issue or just something with the jb4 and/or BEF.

https://datazap.me/u/msoden82/bmw-n5...0&data=1-4
Quote:
Originally Posted by Soden82 View Post
Hi guys, just wondering if someone could take a look at a log for me. Car is a 11' FBO and JB4 w/ MHD BEF. Seems to be undercutting boost targets by a good 2-3psi. Happens in every gear I log in.

Updated my jb4 to the latest firmware about 2 months ago. Did I need to do anything with the diode before I updated? Not sure what board I have, but purchased the jb4 6/17. Trying to figure out if it's a hardware issue or just something with the jb4 and/or BEF.

https://datazap.me/u/msoden82/bmw-n5...0&data=1-4
Are you on a stock turbo? That seems pretty normal. You should upgrade your turbo if you want to make more boost up top.
__________________
WedgePerformance E40 MHD | Performance Exhaust Mod | BMS DP | Vibrant 1790 | BMS Intake | VRSF CP | xHP Stage 3
Michelin PSS | M3 Control Arms
LUX v4 LEDs | Shadowline Grills | Lip Spoiler
Appreciate 0
      09-11-2018, 05:28 AM   #3
Soden82
Major
United_States
476
Rep
1,188
Posts

Drives: 2011 BMW M3
Join Date: Jun 2017
Location: Boston

iTrader: (1)

Garage List
2011 BMW M3  [0.00]
Quote:
Originally Posted by Johnny Boost View Post
Quote:
Originally Posted by Soden82 View Post
Hi guys, just wondering if someone could take a look at a log for me. Car is a 11' FBO and JB4 w/ MHD BEF. Seems to be undercutting boost targets by a good 2-3psi. Happens in every gear I log in.

Updated my jb4 to the latest firmware about 2 months ago. Did I need to do anything with the diode before I updated? Not sure what board I have, but purchased the jb4 6/17. Trying to figure out if it's a hardware issue or just something with the jb4 and/or BEF.

https://datazap.me/u/msoden82/bmw-n5...0&data=1-4
Quote:
Originally Posted by Soden82 View Post
Hi guys, just wondering if someone could take a look at a log for me. Car is a 11' FBO and JB4 w/ MHD BEF. Seems to be undercutting boost targets by a good 2-3psi. Happens in every gear I log in.

Updated my jb4 to the latest firmware about 2 months ago. Did I need to do anything with the diode before I updated? Not sure what board I have, but purchased the jb4 6/17. Trying to figure out if it's a hardware issue or just something with the jb4 and/or BEF.

https://datazap.me/u/msoden82/bmw-n5...0&data=1-4
Are you on a stock turbo? That seems pretty normal. You should upgrade your turbo if you want to make more boost up top.
Yup stock turbo and pump gas. Just thought actual boost should be close to boost targets
__________________
2009 BMW 335i 6MT
*big single (eventually)*
For now...
MHD tuned
VRSF Race IC
DCI
ATM exhaust
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



All times are GMT -5. The time now is 06:57 AM.




e90post
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
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