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 11-22-2011, 07:01 PM   #61
Hornung418
Registered User
 
Join Date: Dec 2010
Location: Bel Air, MD/ WVU
Posts: 1,012
My Ride: '04 MB ZHP
So I just found a cold start exhaust leak on Bank 1...so Headers are my next project because if I have to change the gasket...Sure as hell I'm going to ditch the cats. Already have Eu2 DME so this should be a huge gain!

Anybody have any leads for the best fitting eBay headers currently on the market?

I'm also looking at these: http://www.schmiedmann.es/3_series/E...ge17.htm#16694
__________________
Hornung418 is offline   Reply With Quote
Old 11-23-2011, 10:23 AM   #62
murph1379
Registered User
 
Join Date: Nov 2006
Location: Minneapolis, MN
Posts: 483
My Ride: 2003 330i ZHP
wow, that's actually a really good deal for headers and cats!

I wish those were legal for SCCA ST category autocross, would make my life a lot simpler.

I think I'm going to pick up a set of the Turner/IE shorty E36 headers, then have catted downpipes created, if it'll all fit in there...
murph1379 is offline   Reply With Quote
Old 11-23-2011, 05:03 PM   #63
Hornung418
Registered User
 
Join Date: Dec 2010
Location: Bel Air, MD/ WVU
Posts: 1,012
My Ride: '04 MB ZHP
Quote:
Originally Posted by murph1379 View Post
wow, that's actually a really good deal for headers and cats!

I wish those were legal for SCCA ST category autocross, would make my life a lot simpler.

I think I'm going to pick up a set of the Turner/IE shorty E36 headers, then have catted downpipes created, if it'll all fit in there...
Will the shorty's let you keep your ST class standing?

I think I'm going to get some ebay headers and start a fund for the Schmiedmann setup.
__________________
Hornung418 is offline   Reply With Quote
Old 11-23-2011, 10:55 PM   #64
darksideracer69
Registered User
 
Join Date: Jan 2008
Location: TX
Posts: 2,886
My Ride: 01 325ci
Quote:
Originally Posted by Hornung418 View Post
Will the shorty's let you keep your ST class standing?

I think I'm going to get some ebay headers and start a fund for the Schmiedmann setup.
I wouldn't waste the time, plus the headache ebay headers give
__________________
Quote:
Originally Posted by dmax View Post
If she ever yells 'oh god, oh god' just say, 'no, just Doug.'


IMAG02051
darksideracer69 is offline   Reply With Quote
Old 11-24-2011, 12:31 AM   #65
Hornung418
Registered User
 
Join Date: Dec 2010
Location: Bel Air, MD/ WVU
Posts: 1,012
My Ride: '04 MB ZHP
I have to repair the gaskets/heatshields...might as well spend the extra cash and throw headers in there, ya know? Unless you're talking about fitment issues and being sent the wrong ones.

This will be a fun project when I'm reinforcing my subframe, replacing my bushings with a blend of Powerflex and OEM and have the exhaust and drive shaft dropped.
__________________
Hornung418 is offline   Reply With Quote
Old 11-24-2011, 12:01 PM   #66
murph1379
Registered User
 
Join Date: Nov 2006
Location: Minneapolis, MN
Posts: 483
My Ride: 2003 330i ZHP
Quote:
Originally Posted by Hornung418 View Post
Will the shorty's let you keep your ST class standing?
Yeah, for STX I can swap the header, but need to maintain some sort of cat within 6" of the stock location.

My thinking is that the shorty headers will allow some room in there for some catted downpipes. I guess we'll see...
murph1379 is offline   Reply With Quote
Old 11-24-2011, 03:08 PM   #67
darksideracer69
Registered User
 
Join Date: Jan 2008
Location: TX
Posts: 2,886
My Ride: 01 325ci
Quote:
Originally Posted by Hornung418 View Post
I have to repair the gaskets/heatshields...might as well spend the extra cash and throw headers in there, ya know? Unless you're talking about fitment issues and being sent the wrong ones.

This will be a fun project when I'm reinforcing my subframe, replacing my bushings with a blend of Powerflex and OEM and have the exhaust and drive shaft dropped.
Yea talking about fitment. Why don't you just get some from bimmerbrakes ?

Sent from my SGH-T959V using Bimmer
__________________
Quote:
Originally Posted by dmax View Post
If she ever yells 'oh god, oh god' just say, 'no, just Doug.'


IMAG02051
darksideracer69 is offline   Reply With Quote
Old 11-24-2011, 11:14 PM   #68
Hornung418
Registered User
 
Join Date: Dec 2010
Location: Bel Air, MD/ WVU
Posts: 1,012
My Ride: '04 MB ZHP
Quote:
Originally Posted by darksideracer69 View Post
Yea talking about fitment. Why don't you just get some from bimmerbrakes ?

Sent from my SGH-T959V using Bimmer
M54 fitment only...

Sent from my DROIDX using Bimmer
__________________
Hornung418 is offline   Reply With Quote
Old 12-02-2011, 07:59 PM   #69
MSportBMW
Registered User
 
Join Date: Sep 2009
Location: Sydney, Australia
Posts: 621
My Ride: E46, EVO8
Short vid, before it goes in for tune and cams...

MSportBMW is offline   Reply With Quote
Old 12-03-2011, 02:27 AM   #70
MSportBMW
Registered User
 
Join Date: Sep 2009
Location: Sydney, Australia
Posts: 621
My Ride: E46, EVO8
Quote:
Originally Posted by Sankekur View Post
That is the flange after the collectors (where is connects to the rest of the exhaust) that had to be modified? You had not issues with the bolt pattern and port spacing? Any mods made to the piping before the collectors or do they fit fine in the space available?

Sorry for all the questions, but I just need to learn as much from someone who actually did this awesome mod
Quote:
Originally Posted by Dan330Ci~ View Post
Nice work, share the knowledge/make a DIY
The primaries didn't need to be modified just the top flange where it connects to the exhaust ports and the bottom section of the headers (to line them up properly with the mid section). For the latter, I imagine it would depend on your current set up. My mechanic/workshop here in Sydney did the install so don't know all the details. To be honest I wouldn't do this mod unless you really know what you're doing
__________________

Last edited by MSportBMW; 12-03-2011 at 02:29 AM.
MSportBMW is offline   Reply With Quote
Old 12-03-2011, 12:02 PM   #71
Hornung418
Registered User
 
Join Date: Dec 2010
Location: Bel Air, MD/ WVU
Posts: 1,012
My Ride: '04 MB ZHP
Thanks for the vid! Keep it up guys!
__________________
Hornung418 is offline   Reply With Quote
Old 12-04-2011, 03:09 AM   #72
Dan330Ci~
Registered User
 
Join Date: May 2011
Location: UK
Posts: 216
My Ride: 330Ci Clubsport
Well I just had my annual UK MOT test with de-catted M52 manifolds fitted and it passed with flying colours! This is of course due to the secondary cats downstream

I was a bit worried that the secondary cats would be just that - secondary - and not clean up the exhaust gasses as much as the primaries in the manifolds. Turns out they are just as good as having primaries plus secondaries and the older cars which only have cats in the downstream location

In detail

Fast idle test
RPM l/min: min 2500 max 3000 actual 2743
CO % vol: max 0.200 actual 0.091
HC ppm vol: max 200 actual 33
Lambda: min 0.970 max 1.030 actual 1.004

Natural idle test
RPR l/min: min 450 max 1500 actual 711
CO % vol: max 0.300 actual 0.042

Pretty convenient that on my car I have these secondary cats and not a resonator like US cars.
__________________
'04 330Ci Clubsport | Estoril Blue | 6MT | Black Leather/Silver Cube
Turner Motorsport | Ground Control | Stett Performance | Moroso | Powerflex | Meyle HD | Goodridge
Dan330Ci~ is offline   Reply With Quote
Old 12-05-2011, 01:53 AM   #73
MSportBMW
Registered User
 
Join Date: Sep 2009
Location: Sydney, Australia
Posts: 621
My Ride: E46, EVO8
Quote:
Originally Posted by Dan330Ci~ View Post
Well I just had my annual UK MOT test with de-catted M52 manifolds fitted and it passed with flying colours! This is of course due to the secondary cats downstream

I was a bit worried that the secondary cats would be just that - secondary - and not clean up the exhaust gasses as much as the primaries in the manifolds. Turns out they are just as good as having primaries plus secondaries and the older cars which only have cats in the downstream location

In detail

Fast idle test
RPM l/min: min 2500 max 3000 actual 2743
CO % vol: max 0.200 actual 0.091
HC ppm vol: max 200 actual 33
Lambda: min 0.970 max 1.030 actual 1.004

Natural idle test
RPR l/min: min 450 max 1500 actual 711
CO % vol: max 0.300 actual 0.042

Pretty convenient that on my car I have these secondary cats and not a resonator like US cars.
Good to see you passed. I still have the secondaries on the car aswell
__________________
MSportBMW is offline   Reply With Quote
Old 12-06-2011, 12:27 PM   #74
Sankekur
Registered User
 
Join Date: Aug 2010
Location: South Africa
Posts: 235
My Ride: 2004 330i
Quote:
Originally Posted by MSportBMW View Post
The primaries didn't need to be modified just the top flange where it connects to the exhaust ports and the bottom section of the headers (to line them up properly with the mid section). For the latter, I imagine it would depend on your current set up. My mechanic/workshop here in Sydney did the install so don't know all the details. To be honest I wouldn't do this mod unless you really know what you're doing
Cool thanks, my current setup is still the stock exhaust, but my plan is get a custom exhaust made up with the S50 header, well now at least I know it fits so I could just take it to them exhaust shop to get it done, and thanks again

Edit: Sorry one more question, was a OEM gasket used for the exhaust?
__________________

Last edited by Sankekur; 12-06-2011 at 12:30 PM.
Sankekur is offline   Reply With Quote
Old 12-07-2011, 01:45 AM   #75
MSportBMW
Registered User
 
Join Date: Sep 2009
Location: Sydney, Australia
Posts: 621
My Ride: E46, EVO8
Quote:
Originally Posted by Sankekur View Post
Cool thanks, my current setup is still the stock exhaust, but my plan is get a custom exhaust made up with the S50 header, well now at least I know it fits so I could just take it to them exhaust shop to get it done, and thanks again

Edit: Sorry one more question, was a OEM gasket used for the exhaust?
Yep S50 OEM gasket
__________________
MSportBMW is offline   Reply With Quote
Old 01-15-2012, 02:04 PM   #76
Dan330Ci~
Registered User
 
Join Date: May 2011
Location: UK
Posts: 216
My Ride: 330Ci Clubsport
Just a few pics I finally got chance to take, not great quality but gives you an idea:









__________________
'04 330Ci Clubsport | Estoril Blue | 6MT | Black Leather/Silver Cube
Turner Motorsport | Ground Control | Stett Performance | Moroso | Powerflex | Meyle HD | Goodridge
Dan330Ci~ is offline   Reply With Quote
Old 07-18-2012, 05:37 PM   #77
Boylin
Registered User
 
Join Date: Apr 2008
Location: Cardiff, Wales
Posts: 35
My Ride: 320Ci M Sport Coupe
Quote:
Originally Posted by Dan330Ci~ View Post
Well I just had my annual UK MOT test with de-catted M52 manifolds fitted and it passed with flying colours! This is of course due to the secondary cats downstream

I was a bit worried that the secondary cats would be just that - secondary - and not clean up the exhaust gasses as much as the primaries in the manifolds. Turns out they are just as good as having primaries plus secondaries and the older cars which only have cats in the downstream location

In detail

Fast idle test
RPM l/min: min 2500 max 3000 actual 2743
CO % vol: max 0.200 actual 0.091
HC ppm vol: max 200 actual 33
Lambda: min 0.970 max 1.030 actual 1.004

Natural idle test
RPR l/min: min 450 max 1500 actual 711
CO % vol: max 0.300 actual 0.042

Pretty convenient that on my car I have these secondary cats and not a resonator like US cars.
Hey,

Sorry I'm a bit late on this one!

I have a set of these M52 style manifolds ready to go onto an M54. How did you wire up the pre- and post-cat O2 sensors to stop it giving an error code?
Boylin is offline   Reply With Quote
Old 07-19-2012, 07:51 PM   #78
TerraPhantm
Registered User
 
Join Date: Feb 2008
Location: Mountain Top
Posts: 5,903
My Ride: 2005 M3 Coupe
Perhaps he welded on bungs behind the secondary cats (which now serve as his primary/only cats). UK E46s had cats in the midpipe unlike other regions. In the US, SULEV cars had secondary cats, and can be swapped into m54 cars. M52TUs would probably need a dual exhaust conversion.
__________________
TerraPhantm is offline   Reply With Quote
Old 03-11-2013, 01:05 AM   #79
heztheone
Registered User
 
Join Date: Nov 2012
Location: Lebanon (The Country)
Posts: 20
My Ride: '04 ZHP 6 M/T
what about fitting S50 Euro headers on an M54B30 (both LHD of course) ?
any luck with that?
__________________

Last edited by heztheone; 03-11-2013 at 01:05 AM.
heztheone is offline   Reply With Quote
Old 03-11-2013, 08:14 AM   #80
murph1379
Registered User
 
Join Date: Nov 2006
Location: Minneapolis, MN
Posts: 483
My Ride: 2003 330i ZHP
Quote:
Originally Posted by TerraPhantm View Post
In the US, SULEV cars had secondary cats, and can be swapped into m54 cars.
That's just for the 325, right? No SULEV 330?

Hmm, this picture in the 330 diagram looks just like the M56 325, but there's no #2 on the list:

http://www.realoem.com/bmw/showparts...42&hg=18&fg=10

With the cat placement rules of my autocross class, it would be a very big deal to me if there is a 330 or ZHP that came with these secondary cats, can anyone confirm? Would it have to be SULEV to be sold in CA?
murph1379 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 04:41 AM.


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