I searched for this but can't really find what I'm looking for.

I'm wondering who has gone to a wastegate that dumps to atmosphere and just a downpipe off the turbo, with a bung for o2 sensor.

If so what downpipe? or do I need to do this custom.
Also what wastegate?

 

doesnt the o2 housing bridge the turbo to the downpipe?

 

why do u wanna do this??? I do no believe your going to net any gains of power off of doing this...

 

I'm just wondering if anyone has done this..

 

If you really want a remote WG setup, then get a turbo kit which uses a turbo with a nongated turbine housing and a flanged tubular header. There are many possible options, such as: 50-Trim, 30R, 35R, and etc.

If you want to stay with a stock-type gated turbo, then you can just get an EBay O2 housing and blockoff the merge hole and run a dump pipe straight out from the now divorced WG side of the O2 housing. Someone on here posted up pictures of just such a setup a couple weeks back. It looked nice.

Other option is to have FullRace or Shearer make you up a flanged header for the stock gated 16G and run a dual WG setup. That is, keep the stock integral WG and run a second remote gate on the flanged header.

What are you trying to accomplish anyway? There are one or two aftermarket DP's for the stock 16G turbo, that do away with the seperate O2 housing. However, these one-piece downpipes haven't really been widely used on Evo's. Still, I think that they retain the stock O2 sensor location.

 

if you want to hold boost all the way to 8k rpms or something go with a bigger turbo where your down pipe will be bolted on to the turbine housing. on the stock turbo your beating a dead hourse so to speak.

 

Alright, I'm still learning about turbo cars and everything.

So what you're saying is its pretty much pointless to do it.

How well designed is the stock o2 housing then? Is it worth it to go to an aftermarket one when getting a TBE?

I'm not ready yet to go to a different turbo and manifold setup.