Euro Header install

[crfine88]

Really great work.
Any photos of the wiring and how ran above the heat shield. I may want to re-do mine.

[onebluemcm]

Originally Posted by crfine88

Really great work.
Any photos of the wiring and how ran above the heat shield. I may want to re-do mine.

Ditto ditto ditto - more specifics on this, please.

Originally Posted by z4mnyc

I sometimes see an EGT plausibility fault code in the ECU. What software are you going to run, if any?

Can you explain this a bit further? Does this throw a CEL light/code, or is this something that the ECU makes note of but does not notify the operator?

Anybody here got any thoughts on throwing resonators in the forward part of Section 1? This would be a great time to do it, just not sure if it will affect anything or not pertaining to the cats. My reasoning is that the resonators would rapidly heat up to the same degree as the regular pipes and probbly have next to zero effect on the cats and O2 sensors. I realize that resonators are normally not put upstream of cats though. I just can't make a great argument for why it wouldn't work and have an end result on the tone of the exhaust too? Opinions on this really, really appreciated though.

[inTgr8r]

Originally Posted by onebluemcm

......
Anybody here got any thoughts on throwing resonators in the forward part of Section 1? This would be a great time to do it, just not sure if it will affect anything or not pertaining to the cats. My reasoning is that the resonators would rapidly heat up to the same degree as the regular pipes and probbly have next to zero effect on the cats and O2 sensors. I realize that resonators are normally not put upstream of cats though. I just can't make a great argument for why it wouldn't work and have an end result on the tone of the exhaust too? Opinions on this really, really appreciated though.

IIRC there was/is a solution like this posted on one of the M3 forums.
It's supposedly a good rasp solution.

[johanness]

Originally Posted by crfine88

Really great work.
Any photos of the wiring and how ran above the heat shield. I may want to re-do mine.

Hi Chris!

Sorry no. They were up to their eyeballs in it, and I couldn't get a shot. However, when it goes on the hoist next i'll try to get some more detailed shots. I'll ask them for specifics tho if that helps

[Z4-VILLA]

good luck with your motor mounts....mine almost melted.....i had to fab a shield for the passenger side mount....you should have gone with 2000 degree instead going for looks....

[johanness]

I had the best shop in the lower mainland do the coating (I'm in Vancouver at the moment). Even the installer commented on how well they were done (inside and out)
I was told I'm good for 2000°F intermittently or 1700°F consistently. If the exhaust gas temp is 1510 degrees, my header surface temp is 890. Radiated heat would normally be 190 degrees, but now it's 70. That's a 120 degree drop in temp.
Not worried about my motor mounts melting thanks.

Unless someone else wants to confirm if there could be an upcoming issue? Keep in mind I'm an 08 and don't generally share the earlier mount issues (if that has a bearing on it because they were made with a better compound (10.9's).

How's your CEL goin btw?

[Z4-VILLA]

cel is gone.....also i went with a really aggressive mount...UUC Polyurethane...

[crfine88]

Originally Posted by johanness

Hi Chris!

Sorry no. They were up to their eyeballs in it, and I couldn't get a shot. However, when it goes on the hoist next i'll try to get some more detailed shots. I'll ask them for specifics tho if that helps

Cool thanks!

[johanness]

Originally Posted by z4mnyc

I sometimes see an EGT plausibility fault code in the ECU. What software are you going to run, if any?

I'm in the process of deciding between ESS and AA. However, the handheld tuner from ESS is starting to look like a no-brainer. I've got lots o warranty left, so it's logical. Plus, they tune specifically for these headers/Euro build.

One thing. Clear any/all codes so your ECU starts fresh after this mod. Yes, it's an adaptive system. But a cold-reboot helps clear the path for the juicy new readings that are coming the computer's way. Helps it digest the new readings better and less risk of a CEL.

[johanness]

Just so everyone knows... Despite being what I consider the perfect install, I keep throwing a CEL related to 2C7E - Oxygen sensor after Cat trim control.

In the process of working it out. Car pulls like a banshee tho. Absolutely the best mod thus far.

[Terraphantm]

Originally Posted by johanness

Just so everyone knows... Despite being what I consider the perfect install, I keep throwing a CEL related to 2C7E - Oxygen sensor after Cat trim control.

In the process of working it out. Car pulls like a banshee tho. Absolutely the best mod thus far.

Have you considered simply flashing your DME to the official european tune? The tolerances for the O2 readings might be relaxed a bit with the euro-tune.

If I'm not mistaken, the Euro DME software numbers are:
7840449 for the M-Roadster
7840461 for the M-Coupe

(I'm not sure why the roadster and coupe have different DME software)

[ZStig]

Originally Posted by johanness

Just so everyone knows... Despite being what I consider the perfect install, I keep throwing a CEL related to 2C7E - Oxygen sensor after Cat trim control.

In the process of working it out. Car pulls like a banshee tho. Absolutely the best mod thus far.

are you getting programming now?

[johanness]

Originally Posted by Terraphantm

Have you considered simply flashing your DME to the official european tune? The tolerances for the O2 readings might be relaxed a bit with the euro-tune.

If I'm not mistaken, the Euro DME software numbers are:
7840449 for the M-Roadster
7840461 for the M-Coupe

(I'm not sure why the roadster and coupe have different DME software)

I'm not sure who is going to do the flashing?

The response I got from AA is the following:

"the secondary cats are the problem, they cannot clean up the emission enough to keep the DME happy so you get a SES. The only fix right now is for us to turn off the surveillance on the rear 02 sensors"

That sux.

So unless I can get 'flashed to Euro DME', then an ESS Handheld tuner is in my near future.

[dorifto88]

sad news! im still wondering though how rated M is in the clear, and you are not. im picking up my headers tomorrow too from the ceramic coating shop =/

[johanness]

Who knows? The explanation from AA seems logical, but Starscream had a set of Euro Z4M cats... stared right into them... and they looked IDENTICAL. So I dunno

[ZStig]

My euro cats will be ready for pickup from getting coated on Monday, now I'm not sure if I should get the sensors relocated or just pay extra for the flash...

[johanness]

If you're getting Euro cats, then the only option should be to relocate your O2's. You should be fine for CEL then.

It's pointless getting Euro Cats if you're just going to run software to turn them off (or down) anyways. You could have just stayed with your stock ones then.

If you decide to sell them, let me know!

[Jumbosock]

If people don't run euro based software they should consider putting the EGT in the header to avoid the EGT plausibility code.

[ZStig]

euro headers + stock everything else. What should I do to eliminate the CEL?

[johanness]

Originally Posted by Roffle Waffle

My euro cats will be ready for pickup from getting coated on Monday, now I'm not sure if I should get the sensors relocated or just pay extra for the flash...

So are u getting Euro cats or not??

Originally Posted by Roffle Waffle

euro headers + stock everything else. What should I do to eliminate the CEL?

If that's the components you have, then you've asked the million dollar question. I'm still searching for the answer, although I believe I'll end up with the ESS DirectFlash programmer to solve it.

[Terraphantm]

Originally Posted by johanness

I'm not sure who is going to do the flashing?

The response I got from AA is the following:

"the secondary cats are the problem, they cannot clean up the emission enough to keep the DME happy so you get a SES. The only fix right now is for us to turn off the surveillance on the rear 02 sensors"

That sux.

So unless I can get 'flashed to Euro DME', then an ESS Handheld tuner is in my near future.

If you know your way around a computer, you can do it pretty easily with software like WinKFP and a cheap interface. Otherwise you can go to a dealer (or an indy who has the BMW software), and tell them to manually input the corresponding Euro software number instead of letting it auto-detect the newest version.

I've personally flashed Euro tunes on a few BMWs (no Z4Ms yet, but the process is more or less the same) with good results.

[ZStig]

will it run OK with the engine light on? while I get the software issue figured out..