if you guys ever test a helix o2, let me know. thanks again for all your hard work doing this testing for the evo community!

 

scheides, I am working on a housing, we've actually been doing some searching and have found 3 companies we have recently ordered housings from. I am hoping that by some odd chance that one of these companies have the same ones we used/tested and we can order from them. We will see................

It appears as though 2 of these companies are out of stock though, can't get a real answer.

 

Well if you do make one and you finishing testing it out for power gains and are interested in some real-world DD testing, let me know. I know you don't like to support independent dyno tests, but this would be longevity/reliability testing...I put on 60+ miles/day on my evo and am already on your waiting list for the old-style one. (I'm not looking for a freebee, I just want a o2 housing!) Plus, I could then proudly say that I have a "BR SS o2 housing" rather than a "BR/ebay SS o2 housing"

 

I am NOT making any 02 housings. The cost would be outrageous ot have that built here in the US. I am just on a mission to find another one that works.

 

David - What do you think about 02 housing with an external dump? Have you had any good results with them in the past?

 

+1 There are some promising results over in the Dynoflash forum

 

Personally, I think they are loud and not needed...

 

Have you had any experiance with them on Evo's or DSM's in the past?

I am surprised you feel that way as Al seems to think they are great.

 

Agreed. As the WG's job is to regulate boost by bypassing spent exhaust gases around the turbine wheel, it would really only incrementally benefit someone with a stock exhaust system and only on lower boost levels. At maximum boost the you really would not want the WG to even open at all.

 

Wow................I didn't want to respond anymore about the dump tube on the stock turbo/02 housing but with the above response I guess I have to.

TTP says that "At maximum boost then you really would not want the WG to even open at all."

If what TTP means is this: "IF you are are trying to run the ABSOLUTE MAXIMUM boost possible from the turbo then you would not want the WG to even open at all." Then the statement is correct, otherwise I completely disagree with what TTP just typed. (Not that me disagreeing with them is odd.)

If you have to keep the wastegate closed completely to reach maximum boost then you have a problem in your build. A boost leak, a turbo that is too small for what you are trying to accomplish or something. If for example you are running a stock turbo or Green and you have to actually run the turbo with the wastegate completely shut then the turbo is NOT going to make the maximum power that is could be making after midrange. I gaurantee it, the reason is you are spinning the turbo WAY out of it's efficiency range and you will be loosing power at that point.

dudical26, yes, I have tried external dumps on DSM, probably the first guy to ever do it actually. IF you have an exhaust on a car that is maxed out and cannot handle the flow of the engine then an external dump could help as it will free up some of the back pressure. Otherwise I feel it's nothing more than a noise maker.

 

I was so caught up in my above response I forgot what I actually came here for! haha

We got two more housings in. GARBAGE GARBAGE, they are junk. No way will they work/perform.

All you genius's that think you are buying them from Ebay and getting a deal, I have news for you. If you are getting any of the three that we have no had in our hands (most popular vendors on Ebay) then you got boned just like we did. We cannot resell this crap, it is not designed correctly, it is a **** poor copy of the good ones we use to sell.

That pretty much screws us as these 3 that we ordered appear to be the last 3 vendors pushing them on Ebay, so looks like they are all selling garbage at this point.

I have one more option I am working on...................let's hope these are good ones.

 

Looks like someone should start building a tubular EVO 02 housing then ... $$$$$

 

I'm glad that I bought my EBAY O2 within the first week of David's initial testing. It's holding up nicely!

 

I did not have to do any of this to my Invida O2. Taking the O2 wire out of the injector harness was no big deal.

Also I am not going to trust one Dyno sheet or test as the infinite wisdom to this topic. On a cost basis the Ebay tubular housing cannot be beat. This is why they sell.

I know where the old housings can be found although it becomes questionable which one you can get sent. Which is how we ended up with these:
https://www.evolutionm.net/forums/sh...d.php?t=287161

They fit no AC cars/RS just fine or if you have an AEM you are good to go as it will move the front/only O2 sensor back in the downpipe. They also have a better internal design which is wide open.

 

Hmmmmmmm, not here to get into a pissing match but since you aren't going to "trust one Dyno sheet or test as the infinite wisdom to this topic" I can tell you that the link to the 02 housing you posted I consider a poor design too. We recently bought 3 more housings from Ebay in hopes that someone had the good ones we sold and tested. Unfortuneately we eneded up with 3 more POS.

Currently I have still not found a housing worthy of selling. This is regretable as we sure have a bunch of outstanding orders. Next week........one more part to check out. Then we will have to possibly look into making them in house, which I do not want to do. They will be very expensive if we have to actually build them.

May not be any other options.