Evo o2 housing

[lbaron]

My t25 finally bit the dust and later this week will be installing a E16g on my 2g. I was curious if the Evo o2 housing will bolt up to the stock downpipe? It says it is a direct bolt on, but some downpipes require modification. If so, I will get it because it is only $105 dollars brand new from dsmparts.com otherwise, I will just stick with the stock one for now.

[sbiggi]

The angle where it bolts to the downpipe is slightly different.

[v413nc3]

If I remember correctly the bolt spacing is a bit wider on the Evolution O2 housing.

[lbaron]

I thought the bolts where a bit wider, but wasn't sure because I had read it such a long time ago. I think I might just spend the afternoon and port my 2g o2 housing to assure proper fitting. Thanks guys

[hoffman]

Do a search on here for 2g vs. EVO DPs and there are pictures showing how the EVO style is rotated and canted differently.

[_=X=_]

If you go to RRE's exhaust page they have many comparison pictures. It is canted and the bolts are wider. If you slot the bold holes on a RRE 2.5"-3" DP it will work but it is quite difficult to bolt back on due to the stresses of the canting. The flex section can handle it, but I hear that it is not something you want to do for ever. I assume you could have an exhaust shop cut the downpipe in two once it hits parallel to the ground and rotate it a few degrees and weld it back on. Or just get a RRE Evo III compatable DP. $130 I believe. Did you still need to buy a Evo III o2?

[lbaron]

I don't need to get one. It was just a thought because I'm going to be replacing the turbo and manifold anyways and figured it would be easier to replace that at the same time.

[_=X=_]

Well I'll have a used one for sale pretty soon, let me know if you decide to go in the market for one.