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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Thu, Aug-09-2018, 05:48:18 PM   #1
M3Lyfe617
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Default Euro Header Question

I 'm sure this is a search question, but the search on this forum is ridiculous. I can never find what I'm looking for without looking through hundreds of threads. It pulls up everything.

I'm interested in getting a set of euro headers. I live in a state where I have to do emissions and I would like to avoid the CEL. How do I achieve this and where can a find these headers?
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Old Thu, Aug-09-2018, 06:17:43 PM   #2
smbz2789
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Default Re: Euro Header Question

You will need a set of euro cats as well or a catted section 1
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Old Thu, Aug-09-2018, 06:23:01 PM   #3
M3Lyfe617
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Default Re: Euro Header Question

Thanks.

With that I assume you mean I'll need an catted aftermarket section 1? Also, does that mean my US stock cat won't work or will it restrict the Euro, therefore not recommended

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You will need a set of euro cats as well or a catted section 1
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Old Thu, Aug-09-2018, 06:25:44 PM   #4
Toxic0n
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Default Re: Euro Header Question

US stock cats are in the headers whereas the Euro cats are in Section 1.
If you get both Euro headers and section 1, you should be all plug and play and you should pass emissions.
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Old Thu, Aug-09-2018, 06:26:09 PM   #5
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Default Re: Euro Header Question

US stock cats are in the headers whereas the Euro cats are in Section 1.
If you get both Euro headers and section 1, you should be all plug and play and you should pass emissions.
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Old Fri, Aug-10-2018, 01:02:18 PM   #6
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Default Re: Euro Header Question

Got it. Thanks

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Originally Posted by Toxic0n View Post
US stock cats are in the headers whereas the Euro cats are in Section 1.
If you get both Euro headers and section 1, you should be all plug and play and you should pass emissions.
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Old Fri, Aug-10-2018, 03:23:16 PM   #7
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Default Re: Euro Header Question

Sounds like you have much more research to do based on these questions....

Fortunately, these questions among many others have been answered many times and searching is easier than you might think.

The best way to search these questions is to go to google and type in: "M3forum: insert question here"

or

also on google:
"insert question here site:www.m3forum.net"

Alternatively, you can replace the "m3forum" part with "M3cutters" or "E46Fanatics" for a broader search so you are not limiting yourself to just this forum.

Not trying to bust your balls, only trying to help. If these are your questions now and if you don't know how to search, than I'd anticipate many more threads like this in the future from you, this will save everyone time going forward and it will give you a much better grasp on the information you seek.

Cheers.
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Old Fri, Aug-10-2018, 05:33:38 PM   #8
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Default Re: Euro Header Question

Thanks
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Old Fri, Aug-10-2018, 10:49:57 PM   #9
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Default Re: Euro Header Question

I'm catless myself with Euro headers - the way i avoid CEL is i got a B-Spec tune from Buildjournal (with some other goodies).
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Old Tue, Aug-14-2018, 03:55:14 AM   #10
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Default Re: Euro Header Question

You will pass US emissions, but you will also likely get a CEL with the OEM Euro headers and cats related to the secondary air pump and possibly an exhaust gas temperature code. The only fix is to get a tune to disable them. This is apparently a common problem with installing the Euro headers and cats.
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Discussing Torque Spec thread in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)