E46 BMW Social Directory E46 FAQ 3-Series Discussion Forums BMW Photo Gallery BMW 3-Series Technical Information E46 Fanatics - The Ultimate BMW Resource BMW Vendors General E46 Forum The Tire Rack's Tire Wheel Forum Forced Induction Forum The Off-Topic The E46 BMW Showroom For Sale, For Trade or Wanting to Buy

Welcome to the E46Fanatics forums. E46Fanatics is the premiere website for BMW 3 series owners around the world with interactive forums, a geographical enthusiast directory, photo galleries, and technical information for BMW enthusiasts.

You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

If you have any problems with the registration process or your account login, please contact contact us.

Go Back   E46Fanatics > Tuning & Tech > Driveline, Engine & DME Tuning

Driveline, Engine & DME Tuning
Talk about driveline improvements, NA tuning and DME tuning your E46 BMW here. This includes diffs, intakes, exhausts, chips, software and OBD tuning.

Reply
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 10-27-2008, 12:06 PM   #1
rlauren15
Registered User
 
Join Date: Jul 2005
Location: Atl. Georgia
Posts: 22
My Ride: LSB M3
Need help with DME???

This is the situation. I have a 2001 m3. i have went from o2 replacement to after market cats and exhaust to dme. The guy who extended the o2 sensors to the post cats used electrical tape after splicing them and stated that he couldnt do anything else about the engine light still being on. i get the car back driving no more than 50mph to the house. Another guy looks at it from another dealership noticed that the tape that was used for extension was burned out to the point of frying the dme. He tells me the o2 sensors have to be replaced along with the dme.If the Dme was burned or fried to the point that it has to be replaced, the car wouldnt be able to crank or drive or do anything else should it? Is this a gimmick or is this what it is? The computer is showing code 81 which indicates a protection fault that prevents any extra fuel going into the cylinders which prevents any more torque or acceleration. This is why i cant go past 5000rpm. What can i do to get this fixed?? Do i really need a dme??

Last edited by rlauren15; 10-27-2008 at 03:44 PM. Reason: State everything in a quesion
rlauren15 is offline   Reply With Quote
Ads by Google

Guests, get your FREE E46Fanatics.com membership to remove this ad.
Old 10-27-2008, 01:58 PM   #2
rlauren15
Registered User
 
Join Date: Jul 2005
Location: Atl. Georgia
Posts: 22
My Ride: LSB M3
Can anyone reply to this? What should one do??
rlauren15 is offline   Reply With Quote
Old 11-17-2008, 09:37 PM   #3
M54B25
Registered User
 
Join Date: Oct 2003
Location: fLoRida
Posts: 157
My Ride: 2006 E46 M3 ZCP
Check your O2 pre-cats & post cats connections, sometimes they mis-plug the oxygen sensor with the post/pre cats. Reset the codes & if car does not run correctly, disconect the post O2 but keep the pre-cats O2 at all time.

Do a DME diagnostic. If the DME still cranks the car & it idles, DME good!
__________________
'06 M3 ZCP Titanium Silver w/PP + Nav.
'07 VW GTI DSG
'10 335i M-Tech

Last edited by M54B25; 11-17-2008 at 09:40 PM.
M54B25 is offline   Reply With Quote
Old 11-07-2009, 11:51 PM   #4
bmwwindout
Registered User
 
Join Date: Nov 2006
Location: NC
Posts: 33
My Ride: 88M3, 95M3, 01M3
i think the o2 heaters circuts are built into the dme.. i would check connections first and replace o2 sensor b4 buying a expensive dme that would have to be programed for your car.
bmwwindout is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

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
Censor is OFF





All times are GMT -5. The time now is 03:39 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
(c) 1999 - 2011 performanceIX Inc - privacy policy - terms of use