Sorry for posting here with this fellas but no one will answer me in the Turbo forum. Was checking out Lancershop and found an RAcing 02 housing. The description says that it will give 10hp, instant throttle response, faster spool up. This sound right? Is it worth in in your opinion? Would this be a better upgrade then say a intake?

 

I think its just the marketing jargon they're using to sell the part. There is an upgraded Vishnu O2 housing available with the standard exhaust.

As far as an intake, I think that'd be a bad idea, as your baseline maps were designed and tuned with the stock airbox in place.

 

FYI, the Lancershop O2 housing is a DNP product.. so you can research it if you want.. I have one, but no conclusive info on how much of a gain or improvement it offers.. Best I can tell from what I've read is its biggest feature is slightly earlier spool... I think when upgraded "stock" turbos become available, thats when things like a header and O2 housing will shine most.. Of course, you'd then be approaching the cost of a replacement turbo setup anyway..

And an aftermarket intake will foul up the MAF readings so all of your maps would have to be adjusted accordingly.

 

MalibuJack: Can you comment on the size of the outlet of the DNP housing? I've asked the vendors but they don't seem too interested in answering.

It looks as if the OEM donut gasket is reused, which means the oulet is not any larger than stock. Is this correct?

 

I would also like to know what gains can be seen with the full standard turbo back exhaust vs. the standard dump back. Lancershop claims you will gain 8-14 HP, instant throttle response, and quicker turbo spool.

Jeb

 

I'd be happy to see a 5-8whp gain with the o2 housing upgrade.

shiv

 

Great thanks for the info, that sounds a lot more realistic!

Can't wait to strap that bad boy on!! I'll post some dyno graphs of my gains so everyone will know what to expect, hopefully by the end of the month.

Jeb

 

Ideally, you separate the two flow paths coming out of the turbo's turbine housing (the flow exiting the turbine itself, and the flow from the wastegate port) as much as possible. The stock O2 housing looks pretty decent at doing this, for a stock piece.

The Vishnu turbo-back exhaust (the one that removes the factory O2 housing completely) looks like it keeps the two flows separated for a longer distance than any O2 housing, stock or aftermarket, could.

The power benefits of this probably become even more apparent at elevated boost levels when you're shoving a whole lot of flow through both orifices (heh heh). Most likely it improves boost controllability/stability too... Shiv might comment? Sorry for the threadjack.

 

I had the DNP O2 Housing installed along with an aftermarket header. I believe the "spool-up" thing is a bit quicker.
The fact that ignores that "third" bolt (that little "ear")however, - that connects to the turbo - still bugs me. I see it as deviating from the original design. I've heard a lot of talk about it not being a problem because of the fact that it is lighter..blah, blah.
If I had to do it all over again? I'd keep my headers, BUT get Shiv's Full Turbo-back (yeah).
Here's my 2c though about the DNP O2 housing:
Had it for about a month, been driving hard, so far- no problems.

 

Shiv,
So have you tuned a car with one and seen results yet?I also heard the install requires removal of the radiator,is that true?

 

I dunno about performance gains vs. with or without the housing. I only have experience with the full exhaust. I think spool-up is 300 to 400 RPM quiker, it seems to hold boost much more consistently than stock and the pull above 5k is noticably increased. This is with no ther mods at all. Hopefully my XEDE will be here next week. Anyway to answer your question about removing the radiator, its pretty much mandatory. The very bottom nut on the O2 flange cannot be reached otherwise. Probably why it has been deleated form other aftermarket housings, a shortcut to ease installation.

 

I got the O2 housing on my car, along with test pipe, down pipe, exhoust, intake, and cam gears, and the rest stock no electronics. On the Dyno it showed 281rwhp, I am amazed by the number, I never had the car dynoed before the O2 housing (from lancershop) but I noteced the differance and WAY faster speel than stock, I highly recomend it guys, it worked for me !

Talal

 

Are you talking about shiv's dyno?

 

I installed a full 3" GHL turbo back first. The dyno showed a 39hp increase after an agressive reflash done by John @ Jester tuning. After installing the o2 housing, we dynoed an impressive 14.8 hp increase with the addition of the O2 housing. Total power was up to 312hp with full exhaust& O2 housing, Samco Sport hose boost kit and high pressure clamps, Nology wire kit, K&N drop in filter, Forge Motorsports BOV, 22 Ibs of boost, Intercooler sprayer iced w/70% alcohol and water. I would have to say that The reflash made the biggest difference with the way my evo runs. From factory then run pig rich! The re-flash also raised the spool time by about 200-300 rpm quicker! This was acomplished by the more agressive timing and fuel mapping. The o2 housing made about 300 rpm quicker spool up. My spool up is now around 2950. BYE-STI!!!!!

 

Damn talk about making a statement in bold .