e46 M3 Euro header vs other aftermarket

I've been doing some searching around for the right header setup for me. I'm going to be running catless as well.

Specs : If I'm going catless does it matter whether I run OEM Euro headers or something like AP? Flow / diameter should net similar hp gains?

Here's my dilemma :

Status gruupe : $810
Agency Power : $890
Euro header : $620

Price wise and fitment the best choice looks like OEM Euro - cat-less.


From what I've read I can't seem to find anyone running euro headers without cats in section 1. If the HP gains will be about the same for any headers running cat-less then I will go after the Euro units.


Cheers

Bump

Would also be interested in including SS stepped headers into this mix for comparison sake.

Do you live in the area of BC that has no bi-annual emissions testing? If not, running no cats would not be a wise thing to do. For example, on the freeway, I was following another cat free M3 that was maybe 100 to 150 yards in front of from me, and on this relatively open stretch of freeway, I could smell his hydrocarbon laden exhaust. It's your own choice to make yourself "cop (police) bait", but the smart play is not to.

Now that I think about it, do Canadian M3s even run the same exhaust as M3s in the United States? I would think Canadian and U.S. M3s would be using different exhausts. You should check to see where the cats are located in your Canadian M3. You already may be running a set of euro headers.