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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 Tue, Dec-15-2009, 03:47:05 PM   #21
robertyoke
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Originally Posted by Custom Performance View Post
On the Euro M3, the EGT port is on section 1, before the cat. If you don't have the EGT probe installed, you will get a CEL, but the car should run OK. I have built a few Euro CRT where the EGT port is on the front of the cat on the CRT. Like this...



With this setup, it's just plug and play. You would just need to ensure the pre and post O2s are in the right location. Then, install the EGT probe. No CEL, no rasp, and no software needed. The challenge is finding an EGT port to weld onto the CRT cat. The EGT port pictured above come off a set of OE headers. If you have a old set of OE headers, and can cut the EGT port off, then I can build you a Euro CRT.



why not just use the egt port on the headers if you have one there?

whos midpipe is that?
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Old Tue, Dec-15-2009, 03:54:25 PM   #22
Custom Performance
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why not just use the egt port on the headers if you have one there?

whos midpipe is that?
I think he has Euro headers which does not have an EGT port. The midpipe? That is our custom made Rasp Terminator with hi-flow, 400 cell cats. You can read more about it and hear some sound clips HERE.
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Old Tue, Dec-15-2009, 07:20:52 PM   #23
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is it worth it in the end? yes i believe so. my mid and top end pull extremely hard now over stock. and anway the hard part is done and that was the install of the headers.
hey Jack, can you make me a crt with 100 cats? also i do have my oem headers so i can cut my egt bung out and send that to you.
will you pm me a price, crt's w/egt bung and preferably 100 cell cats if not, minimum 200 cell?
thank you,
jay
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Old Tue, Dec-15-2009, 11:07:26 PM   #24
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is it worth it in the end? yes i believe so. my mid and top end pull extremely hard now over stock. and anway the hard part is done and that was the install of the headers.
hey Jack, can you make me a crt with 100 cats? also i do have my oem headers so i can cut my egt bung out and send that to you.
will you pm me a price, crt's w/egt bung and preferably 100 cell cats if not, minimum 200 cell?
thank you,
jay
200 cell is the lowest available (at leas from me). I don't have a spare set of OE headers. But if you find and EGT, I can put the Euro CRT together for you for $829 (shipped).
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Old Wed, Dec-16-2009, 02:24:55 PM   #25
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any sound clip for car running without cats
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Old Wed, Dec-16-2009, 03:09:17 PM   #26
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Hmmm.... you'll need to search (or ask someone to post up) for the picture of the 02 routing under the hood and go from there. I remember it was a bit confusing to keep track of them.

That said, my headers have a spot for all 4 02s AND an EGT port... so I didn't actually remove/alter anything. Car ran good. Euro headers only have 2 02 bungs as the rears are meant to be installed into the Euro section 1 (after the cats.) I'm not sure about the EGT either. You might need to get a couple bungs welded into your stock sec 1 and reinstall your rear 02s and then get software...... because I think most software requires all 4 O2s..... I know mine does.
Well..things are never easy. I dont have my personal welder machine here in my garage so I guess this will be a shop job...
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Old Wed, Dec-16-2009, 03:19:24 PM   #27
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From what I understand from this thread ....
1. Euro headers will mate right up no problems.
2. Its almost a definite to get software when adding these headers.
3. Take it to a shop because you will need custom welding....

What I dont understand is with Euro headers is that, are their cats in a different spot then an USDM m3 and they are 200 cell right? Which means there more free flowing correct? Also whats an EGT plug and the Euro o2 sensors will be needed correct because there longer...

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Old Wed, Dec-16-2009, 03:48:08 PM   #28
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From what I understand from this thread ....
1. Euro headers will mate right up no problems.
2. Its almost a definite to get software when adding these headers.
3. Take it to a shop because you will need custom welding....

What I dont understand is with Euro headers is that, are their cats in a different spot then an USDM m3 and they are 200 cell right? Which means there more free flowing correct? Also whats an EGT plug and the Euro o2 sensors will be needed correct because there longer...

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1. Euro headers will mate right up no problems.

Correct.

2. Its almost a definite to get software when adding these headers.

No - the options are software or install cats in section 1, or purchase a section 1 with cats installed, or purchase a CRT.

3. Take it to a shop because you will need custom welding....

Only if you decide to purchase the cats separately and have them installed in section 1.

The cats on the Euro M3 are in section 1 (the end of section 1). I have heard that they are 200 cell but (but not confirmed). The EGT is the exhaust gas temperature sensor. On the US M3, the EGT is on the header, just before the O2 bung on the rear header. On the Euro M3, the EGT is on the front of the left side cat. There is no need to cut and splice the rear O2 sensor wires. There is plenty of extra length of rear O2 wire under the engine cover.

The rear O2 sensors wires are doubled-over under wire loom.


Rear O2 sensors hanging down behind transmission cross-member.


Picture of the EGT installed (just after the O2 sensor).
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Old Thu, Dec-17-2009, 12:55:36 AM   #29
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Default finally!

alright instead of just visually checking my o2 sensors, i jacked the car up crawled underneath and swapped them around and that was the problem. runs great now!
no lean codes no misfire codes. just egt and post o2 codes and that is expected since i dont have those hooked up.
time for ess software now.
car pulls really well on the mid and top now. sounds better now that everything is hooked up right.
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Old Thu, Dec-17-2009, 01:06:53 AM   #30
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actually you can get the euro/csl headers, cats and its all plug and play with the oem software. assuming you use plug all the sensors back in.

mikymu's CSL headers/cats theread explains it all

Quote:
Originally Posted by Donovan View Post
From what I understand from this thread ....
1. Euro headers will mate right up no problems.
2. Its almost a definite to get software when adding these headers.
3. Take it to a shop because you will need custom welding....

What I dont understand is with Euro headers is that, are their cats in a different spot then an USDM m3 and they are 200 cell right? Which means there more free flowing correct? Also whats an EGT plug and the Euro o2 sensors will be needed correct because there longer...

Subscribed.
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Discussing euro headers no cats... 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)