well as long as it is the stock ecu and turbo. most people have all the other mods you can get. tbe. intake, etc. i think d/b should ask someone for there LIGHTLY moded evo to use for the tests. i think this will be the best. but im just a trucker so i let the pros do what they do best. im shore d/b will do it the right way as all his tests are done that way.

 

Not to contradict you at all but could you please elaborate more about the "misterious tests " that you mentioned that has been done on 2.5" and 3" O2 housing? As fas as I am aware there are very few test, one of the test is from David Buschur testing a Ebay o2 housing and a few people like SOON2BEVO also testing o2 housing but also testing it simultaneously with other items such intercooler.

Unless you are positive about the 2.5" vs 3" housing I wouldn't make any comments. I believe the Works hosuing has not been tested independently yet and there is no other full 3" o2 housing yet(people claim the new invidia to be a 3" housing but it is not a 3" housing, almost though).

So sumarizing, to my understanding there are no such 2.5 vs 3" o2 housing comparisson made yet.

Carlos

 

I am positive about my statements or I wouldnt have made them. I dont talk just to hear myself. This was pulled from the Invidia o2 housing thread...
https://www.evolutionm.net/forums/sh...4&postcount=43

 

I have a customer that has volunteered the Works housing for testing. It is being shipped. I'll test that one and the Invidia the same day. Not sure if I will post the results or not

 

Do you plan to use the stock unported housing as a baseline? Throw in the Ebay housing that you offer as well so you can get a same day/mod comparison.

Thanks David!


Dave

 

Carlos, I never claimed "testing" of any sort of the 02 for power gains I got, as I added manifold, ported housing, 02 & FMIC to my last dyno so splitting up the power between 4 parts is rather ridiculous, nonetheless as far as 2.5 vs 3.0.

Here is a quote from Forced Performance: They tested 2.5 vs 3.0 on their GT30R at 27psi.

"540whp at 27psi has been recorded with the 2.5” housing. No compromise in power was measured with the 2.5” unit over the 3”

Thats with a GT30 turbine wheel... not a tiny TD05H...

 

Does she like to stick her hands in holes?


J/K


Nice 02 housing by the way.

 

My car has the SS ebay style housing on it now. I will be testing against that housing only.

 

David Busher,Please post the results.I'm very interested.

Thanks

 

+1,000,000,000,000.00

 

DB, how can you test the Works 02 without their DP... wont yours not fit with it?

 

I'm sure it will before he is done

 

one problem with this... if the wg is not open then there is no flow in the wastegate half of the o2. if there is no flow there it gets filled up with the flow from the turbine outlet. this is not ideal.

that said my personal opinion is that it doesn't really matter. you will not see an hp difference, just like you won't see an hp difference from the different flapper designs and just like how you get gains with the ebay o2 evn tho it's not a truly divorced design either. from what i understand the ebay style is just a flange and after that it's "open season".

the point is... with the larger o2s it's the OUTLET that matters. and that said the outlet matters because two flows coming together creates high pressure to expand such a high pressure zone will reduce the high pressure and then get you some more power.

 

and i stated the reasons for it being so in the indivia housing thread.

 

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