E90Post
 


European Auto Source
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Question about fuel trims



Reply
 
Thread Tools Search this Thread
      05-18-2016, 09:59 AM   #1
muncie21
Second Lieutenant
44
Rep
243
Posts

Drives: 335ix
Join Date: Sep 2015
Location: PA

iTrader: (0)

Question about fuel trims

Looking at my data logs, I noticed that both my long-term and short-term trims have an offset between banks. Bank 1 is always higher than bank 2.

I wouldn't expect the trims to be identical, but I'm wondering if the offset is an indication of combustion or fuel delivery efficiency. I.E. one bank has a weak injector or ignition, causing more unburned fuel to enter the exhaust.

Appreciate 0
      05-18-2016, 10:13 PM   #2
Captain Canuck
Enlisted Member
5
Rep
34
Posts

Drives: 2009 335i
Join Date: Dec 2015
Location: Great White North

iTrader: (0)

Mine are imbalanced as well before and after changing plugs, coils and injectors. Car has always run fine for the most part other than a leaky injector so I'm not too worried about it. I'll be getting a walnut blast in about a month and will see if that has any effect.
Appreciate 0
      05-19-2016, 06:42 AM   #3
LQQKOUT
Second Lieutenant
13
Rep
275
Posts

Drives: 335XI
Join Date: Jul 2011
Location: United States

iTrader: (4)

Mine is the same also. I was thinking to buy new O2 sensors to see if the helped.
Appreciate 0
      05-19-2016, 04:12 PM   #4
Shane303
Private
19
Rep
62
Posts

Drives: BMW 335i
Join Date: Jun 2015
Location: Mesa, Arizona

iTrader: (0)

Garage List
2009 335i  [0.00]
Quote:
Originally Posted by Captain Canuck View Post
Mine are imbalanced as well before and after changing plugs, coils and injectors. Car has always run fine for the most part other than a leaky injector so I'm not too worried about it. I'll be getting a walnut blast in about a month and will see if that has any effect.
My trims were off until I had a walnut blast...
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 10:33 PM.




e90post
e90post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2016, 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