Which is better, why, and by how much :???:
I have a US 3.2 M3 and Im looking to redo my whole exhaust. A friend of mine is selling a set of 3.2 Euro headers but I heard 3.0 Euro headers would be better since theyre longer and for another reason which I cant think of now. Any thoughts?
I have a US 3.2 M3 and Im looking to redo my whole exhaust. A friend of mine is selling a set of 3.2 Euro headers but I heard 3.0 Euro headers would be better since theyre longer and for another reason which I cant think of now. Any thoughts?

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