BMW M3 Forum (E90 E92)

BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read


Go Back   M3Post - BMW M3 Forum > E90/E92 M3 Technical Topics > Engine, Transmission, Exhaust, Drivetrain, ECU Software Modifications
 
INDustry distribution
Post Reply
 
Thread Tools Search this Thread
      02-11-2011, 09:43 PM   #1
m3heaven
Captain
 
m3heaven's Avatar
 
Drives: 2015 AW M4 6MT
Join Date: Feb 2008
Location: Los Angeles/New York City

Posts: 813
iTrader: (8)

Lightbulb O2 Extenders for Catless/HFC X-Pipes

Hey Guys,

Just curious has anyone used o2 extenders to remove CELs? With my previous car (Evo X) everyone uses extenders/spacers to remove the CEL when running test pipes.

Here's a picture of 2 different types...


m3heaven is offline   United_States
0
Reply With Quote
      02-11-2011, 09:49 PM   #2
dvpouldar26
Major
 
dvpouldar26's Avatar
 
Drives: 2008 e92 328i, Porsche 987.1
Join Date: May 2008
Location: Beverly Hills, CA

Posts: 1,464
iTrader: (4)

Lambda adaptors aka spark plug foulers aka O2 extendeds wont get rid of a CEL on the m3. Its been tried before and wont work.
__________________
E92 328i
Jet Black / Gloss Black Grilles / 8000k D1S low beam / 6000k HID fogs / GP Thunder 8500k angels & cornering bulbs / black reflectors / gloss black vinyled window trim / tints / smoked rear turn signals / black roundels / AC Schnitzer roof spoiler / VRS style decklid spoiler / Matte black Stripes / Rear fogs / matte mirrors / 19" LM reps / APR lip
dvpouldar26 is offline  
0
Reply With Quote
      02-12-2011, 01:07 AM   #3
Singletrack
4th down; 4th quarter? Renegade.
 
Singletrack's Avatar
 
Drives: 09 SSII E92 M3; 12 AW X5d
Join Date: Aug 2008
Location: Pittsburgh, PA

Posts: 3,795
iTrader: (3)

The o2 extenders that fabspeed sells with their cats do work. Ive gone over 3k miles without a ses light. It's at least long enough to pass the readiness test for inspection. Without the xtenders I would trip the light every 30 to 90 miles and never pass readiness.
Singletrack is offline   United_States
0
Reply With Quote
      02-12-2011, 01:57 AM   #4
Otacon132
Private
 
Drives: E90 M3 Sedan
Join Date: Apr 2010
Location: Miami

Posts: 85
iTrader: (0)

On my old car I used 2 on each, and it worked to clear ces.

All that is is an emissions warning anyway, correct? Or does it make the ecu compensate anything?
Otacon132 is offline  
0
Reply With Quote
      02-12-2011, 02:19 AM   #5
Dave07997S
Colonel
 
Drives: 2013 BMW M3 ZCP Coupe
Join Date: May 2009
Location: Playa del Rey, CA

Posts: 2,457
iTrader: (1)

Quote:
Originally Posted by Singletrack View Post
The o2 extenders that fabspeed sells with their cats do work. Ive gone over 3k miles without a ses light. It's at least long enough to pass the readiness test for inspection. Without the xtenders I would trip the light every 30 to 90 miles and never pass readiness.
Agreed..

Dave
__________________
2013 M3 Coupe-MR/BLK ZCP, ACM test pipes, BPM Stg2 dev. tune and Megan catback, AFE Stg2. with C/F elbow
Previous rides: 2011 M3 Coupe-MR/Blk
2007 Porsche 997C2S Speed Yellow/Blk sport seats
2004 BMW M3 Imola/Blk
Dave07997S is offline  
0
Reply With Quote
      02-12-2011, 12:05 PM   #6
TRY...M3
Major
 
TRY...M3's Avatar
 
Drives: Depends on the day
Join Date: Nov 2010
Location: PA

Posts: 1,432
iTrader: (2)

NOOOOOO do not do it. They threw my car into limp mode. Buy the akrapovic delete r
__________________
e92///M3
TT Lamborghini Gallardo
INSTAGRAM: CHRISTIANPERLES
Lamborghini-Talk.com: Christian.
TRY...M3 is offline   United_States
0
Reply With Quote
      02-12-2011, 12:49 PM   #7
Dave07997S
Colonel
 
Drives: 2013 BMW M3 ZCP Coupe
Join Date: May 2009
Location: Playa del Rey, CA

Posts: 2,457
iTrader: (1)

Quote:
Originally Posted by TRY...M3 View Post
NOOOOOO do not do it. They threw my car into limp mode. Buy the akrapovic delete r
Delete R is an even worse solution..it clears the code every 5 minutes, including any codes that aren't post 02 related.

I have never heard of a 02 sensor extension for the rear 02s cause a car to go into limp mode. The rear 02s are just for monitoring the cats and are not gross adjusters. You had another post I believe where you stated this and you didn't leave any more details.



Dave
__________________
2013 M3 Coupe-MR/BLK ZCP, ACM test pipes, BPM Stg2 dev. tune and Megan catback, AFE Stg2. with C/F elbow
Previous rides: 2011 M3 Coupe-MR/Blk
2007 Porsche 997C2S Speed Yellow/Blk sport seats
2004 BMW M3 Imola/Blk
Dave07997S is offline  
0
Reply With Quote
      02-12-2011, 12:53 PM   #8
Dave07997S
Colonel
 
Drives: 2013 BMW M3 ZCP Coupe
Join Date: May 2009
Location: Playa del Rey, CA

Posts: 2,457
iTrader: (1)

I would use the type of extension that Gintani as well as Fabspeed use such as this..

__________________
2013 M3 Coupe-MR/BLK ZCP, ACM test pipes, BPM Stg2 dev. tune and Megan catback, AFE Stg2. with C/F elbow
Previous rides: 2011 M3 Coupe-MR/Blk
2007 Porsche 997C2S Speed Yellow/Blk sport seats
2004 BMW M3 Imola/Blk
Dave07997S is offline  
0
Reply With Quote
      02-12-2011, 02:03 PM   #9
TRY...M3
Major
 
TRY...M3's Avatar
 
Drives: Depends on the day
Join Date: Nov 2010
Location: PA

Posts: 1,432
iTrader: (2)

[quote=Dave07997S;8899646]
Quote:
Originally Posted by TRY...M3 View Post
NOOOOOO do not do it. They threw my car into limp mode. Buy the akrapovic delete r
Delete R is an even worse solution..it clears the code every 5 minutes, including any codes that aren't post 02 related.

I have never heard of a 02 sensor extension for the rear 02s cause a car to go into limp mode. The rear 02s are just for monitoring the cats and are not gross adjusters. You had another post I believe where you stated this and you didn't leave any more details.

Well Dave since your the expert on O2 extenders can you explain why my car went into limp mode with them on and as soon as I took them out my car immediately left limp mode. I spoke with a lot more people that know the M3 in and out and we came up with that being the solution. I'm speaking from experience not jus your 2 cents. I know a few people that use them on evo Xs an have no problem. But were not talking about evos. I went through 2 weeks of problems with my car just because of the extenders and I don't want it to happen to someone else. And I know these are capable of doing more damage then goof in most cases.
__________________
e92///M3
TT Lamborghini Gallardo
INSTAGRAM: CHRISTIANPERLES
Lamborghini-Talk.com: Christian.
TRY...M3 is offline   United_States
0
Reply With Quote
      02-12-2011, 02:04 PM   #10
TRY...M3
Major
 
TRY...M3's Avatar
 
Drives: Depends on the day
Join Date: Nov 2010
Location: PA

Posts: 1,432
iTrader: (2)

Also don't think the delete r is every 5 minutes it's 10 just saying
__________________
e92///M3
TT Lamborghini Gallardo
INSTAGRAM: CHRISTIANPERLES
Lamborghini-Talk.com: Christian.
TRY...M3 is offline   United_States
0
Reply With Quote
      02-12-2011, 02:06 PM   #11
J08M3
Major General
 
J08M3's Avatar
 
Drives: 2011 M3 COUPE
Join Date: May 2008
Location: NEW YORK

Posts: 6,012
iTrader: (8)

Quote:
Originally Posted by TRY...M3 View Post
Also don't think the delete r is every 5 minutes it's 10 just saying

__________________
J08M3 is offline   United_States
0
Reply With Quote
      02-12-2011, 02:30 PM   #12
FStop7
I like cars
 
FStop7's Avatar
 
Drives: M6
Join Date: Oct 2008
Location: Newbury Park, CA

Posts: 5,059
iTrader: (3)

Quote:
Originally Posted by TRY...M3 View Post
Well Dave since your the expert on O2 extenders can you explain why my car went into limp mode with them on and as soon as I took them out my car immediately left limp mode. I spoke with a lot more people that know the M3 in and out and we came up with that being the solution. I'm speaking from experience not jus your 2 cents. I know a few people that use them on evo Xs an have no problem. But were not talking about evos. I went through 2 weeks of problems with my car just because of the extenders and I don't want it to happen to someone else. And I know these are capable of doing more damage then goof in most cases.
I told you they wouldn't work.

I doubt they caused you to go into limp mode, though. I'd be willing to bet that one of the primary O2 sensors wasn't properly reconnected. That would definitely cause limp mode.
FStop7 is offline   Vatican City State
0
Reply With Quote
      02-12-2011, 04:02 PM   #13
Singletrack
4th down; 4th quarter? Renegade.
 
Singletrack's Avatar
 
Drives: 09 SSII E92 M3; 12 AW X5d
Join Date: Aug 2008
Location: Pittsburgh, PA

Posts: 3,795
iTrader: (3)

Quote:
Originally Posted by TRY...M3 View Post
Well Dave since your the expert on O2 extenders can you explain why my car went into limp mode with them on and as soon as I took them out my car immediately left limp mode. I spoke with a lot more people that know the M3 in and out and we came up with that being the solution. I'm speaking from experience not jus your 2 cents. I know a few people that use them on evo Xs an have no problem. But were not talking about evos. I went through 2 weeks of problems with my car just because of the extenders and I don't want it to happen to someone else. And I know these are capable of doing more damage then goof in most cases.
You need to provide more info for Dave, or anyone else, to address your question. Who installed the extenders? Who made the extenders? What kind of exhaust? What codes got thrown when you went into limp more?

If I had to take a wild guess on your case, I would say they installed the extenders on the primary o2's or, in installing them on the rear o2's, they were not properly grounded. But it's a crap shoot without more info.

In the case of the fabspeed extenders, I have heard of zero incidents where they caused limp mode. I have heard of mixed results in terms of how long the car will go before throwing a code. Some cars don't need the extenders at all. Some will go 3k, others 10k, etc.
Singletrack is offline   United_States
0
Reply With Quote
      02-12-2011, 06:24 PM   #14
TRY...M3
Major
 
TRY...M3's Avatar
 
Drives: Depends on the day
Join Date: Nov 2010
Location: PA

Posts: 1,432
iTrader: (2)

I have an agency power exhaust with agency power mid pipes...the O2 extenders are also made by agency power. They were installed on the secondary cats as instructed and after about 5 miles of driving it jumped right into limp mode. And once we took them out everything went back to normal I just received the CEL.
__________________
e92///M3
TT Lamborghini Gallardo
INSTAGRAM: CHRISTIANPERLES
Lamborghini-Talk.com: Christian.
TRY...M3 is offline   United_States
0
Reply With Quote
      02-12-2011, 10:06 PM   #15
Dave07997S
Colonel
 
Drives: 2013 BMW M3 ZCP Coupe
Join Date: May 2009
Location: Playa del Rey, CA

Posts: 2,457
iTrader: (1)

Well, I just have a AA degree in automotive technology and although Idon't currently work in the field and not up to date on everything relating to the S65 when it comes to the powerplant. I do know how the rear 02s work. A properly installed 02 extension shouldn't cause a CEL. They aren't a gross adjuster, you could seal up the rear 02 bungs, tape up the rear 02 sensors so they aren't in the way and yes you would have a CEL for catalyst inefficiency, but it won't cause the car to go into limp mode. Like others have also said, it was something else.

Hey, I could be wrong but it would be against my experience. Thats all..I don't mean to get into an argument with you.

BTW guys, I have seen these extensions delay the onset of a CEL by several thousand miles even on cars without cats. To me this alone is worth it, if I only have to reset the CEL light every 1000 miles or so I don't mind that to be honest.

I would love to run software, just terrified about the motor going nuclear and being stuck with an outrageous bill.

Dave
__________________
2013 M3 Coupe-MR/BLK ZCP, ACM test pipes, BPM Stg2 dev. tune and Megan catback, AFE Stg2. with C/F elbow
Previous rides: 2011 M3 Coupe-MR/Blk
2007 Porsche 997C2S Speed Yellow/Blk sport seats
2004 BMW M3 Imola/Blk

Last edited by Dave07997S; 02-12-2011 at 10:18 PM.
Dave07997S is offline  
0
Reply With Quote
      02-12-2011, 11:16 PM   #16
aus
Major General
 
Drives: Odysse
Join Date: Jul 2005
Location: Seal Beach, CA

Posts: 7,302
iTrader: (5)

Quote:
Originally Posted by TRY...M3 View Post
I have an agency power exhaust with agency power mid pipes...the O2 extenders are also made by agency power. They were installed on the secondary cats as instructed and after about 5 miles of driving it jumped right into limp mode. And once we took them out everything went back to normal I just received the CEL.
Dude, it was the install.
There are plenty of people who have no cats and run around with a check engine light and don't go into limp. There have also been many who run the Fabspeed and there have been no complaints since they came out with the extenders. So for you to come out and talk like it's the norm to have limp mode is totally inappropriate.
It's cool to give your experience but with an explanation- which others had to drag out of you.
__________________
Let me get this straight... You are swapping out parts designed by some of the top engineers in the world because some guys sponsored by a company told you it's "better??" But when you ask the same guy about tracking, "oh no, I have a kid now" or "I just detailed my car." or "i just got new tires."

Last edited by aus; 02-13-2011 at 12:38 AM.
aus is offline  
0
Reply With Quote
      02-12-2011, 11:46 PM   #17
Dave07997S
Colonel
 
Drives: 2013 BMW M3 ZCP Coupe
Join Date: May 2009
Location: Playa del Rey, CA

Posts: 2,457
iTrader: (1)

Quote:
Originally Posted by aus View Post
Dude, it was the install.
There are plenty of people who no cats and run around with a check engine light and don't go into limp. There have also been many who run the Fabspeed and there have been no complaints since they came out with the extenders. So for you to come out and talk like it's the norm to have limp mode is totally inappropriate.
It's cool to give your experience but with an explanation- which others had to drag out of you.
There you go again...using logic..
__________________
2013 M3 Coupe-MR/BLK ZCP, ACM test pipes, BPM Stg2 dev. tune and Megan catback, AFE Stg2. with C/F elbow
Previous rides: 2011 M3 Coupe-MR/Blk
2007 Porsche 997C2S Speed Yellow/Blk sport seats
2004 BMW M3 Imola/Blk
Dave07997S is offline  
0
Reply With Quote
      02-13-2011, 08:42 AM   #18
jimmy ny
Second Lieutenant
 
jimmy ny's Avatar
 
Drives: 2011 bmw m3
Join Date: Jun 2010
Location: new york

Posts: 248
iTrader: (0)

Just get Dinan stage 2 software. Make some power, no CEL issues AND still pass inspection. I also run elbows on my secondary O2 on my AA HFC X-pipe.
jimmy ny is offline  
0
Reply With Quote
      02-13-2011, 12:53 PM   #19
Dave07997S
Colonel
 
Drives: 2013 BMW M3 ZCP Coupe
Join Date: May 2009
Location: Playa del Rey, CA

Posts: 2,457
iTrader: (1)

Quote:
Originally Posted by jimmy ny View Post
Just get Dinan stage 2 software. Make some power, no CEL issues AND still pass inspection. I also run elbows on my secondary O2 on my AA HFC X-pipe.
Does it help delay the CEL?

Dave
__________________
2013 M3 Coupe-MR/BLK ZCP, ACM test pipes, BPM Stg2 dev. tune and Megan catback, AFE Stg2. with C/F elbow
Previous rides: 2011 M3 Coupe-MR/Blk
2007 Porsche 997C2S Speed Yellow/Blk sport seats
2004 BMW M3 Imola/Blk
Dave07997S is offline  
0
Reply With Quote
      02-13-2011, 02:29 PM   #20
kitw
Colonel
 
kitw's Avatar
 
Drives: 2015 MW M3/2014 Boxster S
Join Date: Jun 2007
Location: Bay Area, CA

Posts: 2,408
iTrader: (14)

Quote:
Originally Posted by Dave07997S View Post
Does it help delay the CEL?

Dave

Dinan Stage 2 software eliminates the check for the rear 02 sensors, so the elbows don't do anything. Stage 2 is for their catless midpipe. (I run it with my Akrapovic)

It didn't seem to make much power on my car, but it is fine in terms of the CEL. I need to plug in my OBD-2 scanner to see if the readiness tests complete.
kitw is online now  
0
Reply With Quote
      02-13-2011, 04:22 PM   #21
Boost3dm3
Lieutenant
 
Boost3dm3's Avatar
 
Drives: E92 M3
Join Date: Sep 2007
Location: DC Metro

Posts: 469
iTrader: (0)

Dinan stage 2 will not pass tests that requires all systems to read as ready.
Maryland is one such state.

http://www.m3post.com/forums/showpos...8&postcount=15
__________________
Become a BMW CCA member; please use member #405205 as a reference . Click here to join online
Boost3dm3 is offline   United_States
0
Reply With Quote
      02-13-2011, 04:46 PM   #22
kitw
Colonel
 
kitw's Avatar
 
Drives: 2015 MW M3/2014 Boxster S
Join Date: Jun 2007
Location: Bay Area, CA

Posts: 2,408
iTrader: (14)

Quote:
Originally Posted by Boost3dm3 View Post
Dinan stage 2 will not pass tests that requires all systems to read as ready.
Maryland is one such state.

http://www.m3post.com/forums/showpos...8&postcount=15
Yup, just checked, readiness checks are failing. Oh well. This means that the Dinan Stage 2 won't pass smog either.
kitw is online now  
0
Reply With Quote
Post Reply

Bookmarks

Tags
cel, hfc, test pipe, x-pipe

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 -5. The time now is 10:22 AM.




m3post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, 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