Thanks, I tend to go back and edit some of my posts,rater than bump threads up
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Originally Posted by mapleridge
In the case of the e46 headers, the fact that they are lighter is not fully explained. Is it because they used thinner piping? or is it the weight of the aftermarket cats, maybe both?
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I really do not know, it could be both. Stainless steel vs OEM alloy
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The euro 330i headers are a cool design. I wonder if there are gains to be had by them. I would love to get my hands on a set. The flange at the ports looks exactly like the north american manifolds.
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Yes, very interesting... especially if catless. Magnaflow may be the cheapest option for a new item, otherwise its shipping charges for used euro stuff. With euro you run into the question of choosing between Euro 4 emmision vs Euro 5 vs n53 gunea-pig risk.
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So now we have the following and correct me if I am wrong:
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Seems legit ... lol
For z4, does SuperSprint claim their product works?
North American
323i & 328i & 128i Are the same - NA version perhaps. Except the other user claiming later 328i got n53/euro style n52 manifolds.
Euro
130i & 330i - Completely different collector = Perhaps same shape and all as the euro n53
EDIT: NOT likely to be the same shape and all as the euro n53. I looked at my own links again... euro 330i n52 has massive cats. Even for the 125i in europe, Euro 5 compliant