EVO III o2 Housing w/ external dump

[Drag Limited]

I am coming to believe that the Evo III o2 housing's section that bolts up to the turbo is not the same shape as the USDM o2 housing and I was wondering if anyone sells a Evo III specific o2 housing with atmospheric dump, that is if the turbo connection is different between the 2.

I am asking because I am looking for the best flow in conjunction with an Evo III turbo.

 

[9d2TSi]

I've yet to see an EvoIII o2 housing that has a dump on it. If you want something that will have the best flow, I would recommend a 3" ss housing with a dump on it. This is of course if you're going with a 3" exhaust. If not, get a 2 1/2" ss o2 housing.

 

[Drag Limited]

sounds good, my only problem is I cannot find a company that sells a 3" unit with atmospheric dump for a 16g.