E90Post
 


GTB Performance
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > NA Engine (non-turbo) / Drivetrain / Exhaust Modifications > Problem with OBX header



Reply
 
Thread Tools Search this Thread
      03-25-2011, 06:25 PM   #1
Martin46
Enlisted Member
Martin46's Avatar
3
Rep
46
Posts

 
Drives: 330i + K&N Intake
Join Date: Apr 2010
Location: EUROPE

iTrader: (1)

Problem with OBX header

Hi guys,

I have serios problems with OBX headers - probably OBX sends to Europe the worst pieces

1. after instaling headers, there is no place to instal engine mount. There is 2cm missig, which is really much. Problem is in exactly sam place where three pipes conect into one, so modification is not possible

I am also waiting for the Gavin's helps, because I know he has been running these headers for som time. Also he posted the manual how to instal headers, please send me a link (i am not able to find it)


I am posting a picture, where you can see that engine mount can not be srewed into place


Any suggestions are welcomed!!!

Appreciate 0
      03-27-2011, 10:07 AM   #2
fdriller9
Banned
United_States
101
Rep
7,090
Posts

 
Drives: '06 AW 330xi
Join Date: Mar 2009
Location: North Jersey/Philly/NYC

iTrader: (4)

Garage List
2006 330xi  [3.22]
Did you install it on the wrong cylinders?
Appreciate 0
      03-27-2011, 10:46 AM   #3
approximate
Bavarian Idiot
approximate's Avatar
Germany
7
Rep
163
Posts

 
Drives: 2007 E92 325i 6MT
Join Date: Sep 2008
Location: Bavaria

iTrader: (0)

Quote:
Originally Posted by ********* View Post
Did you install it on the wrong cylinders?
+1
__________________
Appreciate 0
      03-27-2011, 10:55 AM   #4
fdriller9
Banned
United_States
101
Rep
7,090
Posts

 
Drives: '06 AW 330xi
Join Date: Mar 2009
Location: North Jersey/Philly/NYC

iTrader: (4)

Garage List
2006 330xi  [3.22]
Btw, I didn't know Gavin released a DIY guide....I found it. It's a few threads below.

He mentions you need to cut the engine mount....then he reinforced it but did not think just cutting would be a problem.

There's also some welding that's involved.....which I was unaware of. It would be nice if it was truly bolt on....
Appreciate 0
      03-27-2011, 06:05 PM   #5
Me_Hi
Major
Me_Hi's Avatar
No_Country
18
Rep
1,490
Posts

 
Drives: *
Join Date: Jun 2009
Location: *

iTrader: (13)

I also heard you need to trim the engine mount...
__________________
Appreciate 0
      03-27-2011, 08:20 PM   #6
spieldawg
Private
spieldawg's Avatar
1
Rep
54
Posts

 
Drives: 2007 328i
Join Date: Aug 2010
Location: beavercreek ohio

iTrader: (0)

I think the problem lies with OBX. Personally I wouldn't put an OBX header on my lawnmower. They are notorious for poor quality and fitment.
__________________
2007 M90 Black on black. 15% tint 18 AZA Z1's staggered.

2004 Pontiac GTO.. Mods.. too much to list.

www.rallynorthamerica.com
Appreciate 0
      03-27-2011, 08:25 PM   #7
///M3NACE
Banned
///M3NACE's Avatar
60
Rep
3,907
Posts

 
Drives: E36 M3, E36 Vert , E90 N52
Join Date: Oct 2006
Location: Downers Grove, IL

iTrader: (5)

damn a lawnmower with headers would be sick
Appreciate 0
      03-30-2011, 01:07 AM   #8
Martin46
Enlisted Member
Martin46's Avatar
3
Rep
46
Posts

 
Drives: 330i + K&N Intake
Join Date: Apr 2010
Location: EUROPE

iTrader: (1)

OF COURSE they are fitten on correct cylinder.... I am not so stupit DD

I can not find Gavin guide - please can you post me a link?

Probably I have even worse quality than Gavin, because I need to cut the whole engine support - not just a small piece.

I will try to weld it and adjust, or I will make just the Cat by pass

Martin
Appreciate 0
      03-30-2011, 07:57 AM   #9
axis
First Lieutenant
United_States
6
Rep
343
Posts

 
Drives: 2011 Steel Gray C 300
Join Date: Dec 2010
Location: Florida

iTrader: (2)

Quote:
Originally Posted by Martin46 View Post
OF COURSE they are fitten on correct cylinder.... I am not so stupit DD

I can not find Gavin guide - please can you post me a link?

Probably I have even worse quality than Gavin, because I need to cut the whole engine support - not just a small piece.

I will try to weld it and adjust, or I will make just the Cat by pass

Martin
Have you looked on the main page of this very forum lately? The gavin thread is on this very page. The title of it isn't very informative, however.. it is called something like "The Install (Huge Pics)"

edit - here..

http://www.e90post.com/forums/showthread.php?t=400093
Appreciate 0
      03-30-2011, 10:17 AM   #10
fdriller9
Banned
United_States
101
Rep
7,090
Posts

 
Drives: '06 AW 330xi
Join Date: Mar 2009
Location: North Jersey/Philly/NYC

iTrader: (4)

Garage List
2006 330xi  [3.22]
Yea I posted in the thread to bump it up SO YOU WOULD see it.

I guess you didn't....
Appreciate 0
      03-30-2011, 01:41 PM   #11
Gavin@MMW
Brigadier General
Gavin@MMW's Avatar
United_States
120
Rep
3,880
Posts

 
Drives: MMW Supercharged E90 328i
Join Date: Nov 2009
Location: 818/805

iTrader: (18)

You need to remove the top thin cover metal on that mount, then take a grinder to the mount and basically cut a 2.5" long and .5" deep box out of it, then fill it in with weld to keep it strong. There will be 2-3mm clearance when the engine rocks under power, but it never hits

Your also going to need to cut 1 of your midpipes about an inch because 1 header is too long.

its a pain.
Appreciate 0
      05-08-2011, 07:08 PM   #12
Martin46
Enlisted Member
Martin46's Avatar
3
Rep
46
Posts

 
Drives: 330i + K&N Intake
Join Date: Apr 2010
Location: EUROPE

iTrader: (1)

hello


Headers are fitted.

1. Modification were made on headers not on engine mount.

2. Without O2 sim engine was weaker and much louder compared after installing O2 sim. (after cca 20km - 13 miles the engine check light shut down)

3. I have a minor problem with engine smoothness in low rpm - up to 1600. I suggest that problem is in position of the first o2 sensor.
- in original headers o2 sensor is after connection of three pipes into one
- in OBX the position of o2 sensor is before this connection

What do you think about changing the position of o2 sensors
- first sensor would be mounted on the position of secound (the secound one is either simulated by O2 sensor)



Appreciate 0
      05-08-2011, 11:14 PM   #13
johnsonz1122
First Lieutenant
5
Rep
346
Posts

 
Drives: f30 335xi
Join Date: Oct 2009
Location: vancouver

iTrader: (3)

nice. hows the power gain? does the power worth the pain of the installation?
__________________
13' F30 335xi mods are on their way
09' E90 LCI 328xi (GONE, BUT NOT FORGOTTEN) 19" m310,quad conversion perf exhaust, full mtech conversion, m3 sides, kwv1,etc
PICS:http://www.e90post.com/forums/showthread.php?t=757811
PM me if you need coding for f30s in GVR
Appreciate 0
      05-09-2011, 02:17 AM   #14
Martin46
Enlisted Member
Martin46's Avatar
3
Rep
46
Posts

 
Drives: 330i + K&N Intake
Join Date: Apr 2010
Location: EUROPE

iTrader: (1)

I am not exact about power, but I am sure that it was worth for the sound )

- and also I feel that power has increased..
Appreciate 0
      01-08-2012, 01:55 PM   #15
DJ Apex
Lieutenant
DJ Apex's Avatar
11
Rep
479
Posts

 
Drives: 2006 330i
Join Date: Nov 2010
Location: Houston TX

iTrader: (1)

Quote:
Originally Posted by Martin46 View Post
hello


Headers are fitted.

1. Modification were made on headers not on engine mount.

2. Without O2 sim engine was weaker and much louder compared after installing O2 sim. (after cca 20km - 13 miles the engine check light shut down)

3. I have a minor problem with engine smoothness in low rpm - up to 1600. I suggest that problem is in position of the first o2 sensor.
- in original headers o2 sensor is after connection of three pipes into one
- in OBX the position of o2 sensor is before this connection

What do you think about changing the position of o2 sensors
- first sensor would be mounted on the position of secound (the secound one is either simulated by O2 sensor)



sorry for bring up a old thread but im with u on moving the 1st o2s mines been torowing p2198 and p2196 meaning o2 sensor stuck on rich! so what ic ant understand is how are they both stuck after a modded factory header? im thinking is the location of were they are at so i might swap them out ad put them in the rear location since my rears are turned off due to tune.


Anyone else have any idea on why this might throw thoese codes
Appreciate 0
      01-28-2012, 07:40 PM   #16
DJ Apex
Lieutenant
DJ Apex's Avatar
11
Rep
479
Posts

 
Drives: 2006 330i
Join Date: Nov 2010
Location: Houston TX

iTrader: (1)

anybody!
Appreciate 0
      09-11-2013, 02:15 PM   #17
HueyT09
New Member
HueyT09's Avatar
Canada
0
Rep
10
Posts

 
Drives: 2006 E90 330xi
Join Date: Sep 2013
Location: Gatineau

iTrader: (0)

Exclamation

I had the obx headers installed on my 2006 330xi e90. The modification was also made on headers and not the support of the engine mount. ( took out the thin plate on the support and kinked my the long header to have the clearance to bolt back the support in place). My only problem is the connection on the mid pipe. I am missing 2 cm to make a perfect fitment. Any suggestion ????
Appreciate 0
      09-11-2013, 05:21 PM   #18
cuco
First Lieutenant
cuco's Avatar
United_States
5
Rep
321
Posts

 
Drives: 85 BMW R80
Join Date: May 2012
Location: Cincinnati OH

iTrader: (1)

The mid pipe is suspended by rubber hangers, they should allow for some back and forward play, did you check that?
__________________
Airhead//Caffeine//Junky//Beemer//Fan
Appreciate 0
      09-16-2013, 12:02 PM   #19
HueyT09
New Member
HueyT09's Avatar
Canada
0
Rep
10
Posts

 
Drives: 2006 E90 330xi
Join Date: Sep 2013
Location: Gatineau

iTrader: (0)

Yes... now I have another problem.. check engine light is ON and I can also smell some wierd gas or fuel when I turn on the air ( hot and cold )..
Appreciate 0
      09-16-2013, 12:43 PM   #20
cuco
First Lieutenant
cuco's Avatar
United_States
5
Rep
321
Posts

 
Drives: 85 BMW R80
Join Date: May 2012
Location: Cincinnati OH

iTrader: (1)

The engine check light is normal, get that fixed by getting a tune for catless downpipe setups. The car will always smell different the first couple of times after installing new exhaust parts. If the smell persists then it has to be a leak in the engine to exhaust gaskets. Are you using new gaskets?
__________________
Airhead//Caffeine//Junky//Beemer//Fan
Appreciate 0
      09-16-2013, 12:46 PM   #21
HueyT09
New Member
HueyT09's Avatar
Canada
0
Rep
10
Posts

 
Drives: 2006 E90 330xi
Join Date: Sep 2013
Location: Gatineau

iTrader: (0)

Yes I am using new exhaust gaskets. I had then grind until they fit on obx headers.. It's wierd cause it's been a week that I have them install and everythig seemed fine..
Appreciate 0
      09-16-2013, 01:03 PM   #22
HueyT09
New Member
HueyT09's Avatar
Canada
0
Rep
10
Posts

 
Drives: 2006 E90 330xi
Join Date: Sep 2013
Location: Gatineau

iTrader: (0)

My only concern is the guy told me that it will probably leak from mid pipe to headers (cause there was a small gap ) ..( i will take some picture soon enough to show ) .. There's couple things that I remember when he installed my headers

1- By trying to remove out the 4 o2 sensors.. he kinda broke 1.. so he had to force by heating it ( it ripped all the treard.. he tried to work it back a stick with tread and he told me it worked out.. but who knows)
2 - There was a small gap between 1 headers and and exhaust ( even though he had tight every single bolt of it )

You think those item can be the cause of engine light and smell ?
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 -5. The time now is 11:06 AM.




e90post
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