Originally Posted by weiRtech

although it really doesn't look like it, there is room for a 4" dp but i won't need to worry about that since he only wants a 3". i'm not sure which holset it is but the turbine housing is a split pulse t3 flange... the flange looks so small for how big it is

this was the second bimmer manifold i built. there was nothing wrong with the first one, other than the fact that it was a pain in the *** to build compared to this one since i had a fixture to place the flanges in the same spot. yes, the collector was much easier to do on this one and turned out better inside as well.