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      10-07-2012, 09:25 AM   #35
mapleridge
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Drives: E90 N52 AT
Join Date: Apr 2011
Location: Vancouver, BC

Posts: 2,681
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Quote:
Originally Posted by BudVlad View Post
Later version of N52 has the same manifold as N53. There was a thread by someone who is racing 328i and he is using OEM catless manifold.

BTW: the OEM manifold picture is from Penske parts catalog (N52).
I remember that thread too. I could never find it again either. All the manifolds I have seen have the same collector as the one on the right.



I have not seen a north american car with collectors like the one on the left in the pic. Anywhoo. No one has dyno'd these mmw headers yet. I don't think I have seen a dyno of supersprint before either. All I have seen is dimsums dyno of the primary delete with 15whp gain. I just bought a stock manifold and it is en route to me from NY. Once I get it I will delete the cats and dyno. I already have a baseline so I think it will be a good reference.


Johnny,

Your headers look mig welded, are they?
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