Euro headers

[iPhoneEngineer]

Originally Posted by RobMCoupe

I have Euro headers and section 1 with stock US ECU. No fault at all since day one. I have driven over 3k miles.

Heh, interesting. It's quite strange and frustrating how mysterious this all is and that no one seems to have a completely clear answer for what each region's software expects and what mechanical configurations satisfy those expectations...

[RobMCoupe]

I've talked to my shop many times concerning CEL and passing CA smog. They have experience with other M3 doing the Euro conversion with success. My shop had modified US cat without issue. I forgot if it was a Z4M or M3. I think failed modification on US section one is the post cat sensor not in the right postion. I will swing by the shop next week for their opinion.

[johanness]

No detailed pics of the setup Rob? It would help a LOT. Also, where'd u mount your EGT sensor?

[kennyfrc]

Can someon with STOCK exhuast and Euro Headers please post a sound clip?

[kcdedric]

Originally Posted by kennyfrc

Can someon with STOCK exhuast and Euro Headers please post a sound clip?

Interested in this as well.

Would Euro headers add anywhere near a comparable level of sound as mufflers alone? I'm trying to figure out which route to go.