Back to back testing of Invidia, Ebay and Works 02 housings......
Back to back testing of Invidia, Ebay and Works 02 housings......
I know a lot of you have been waiting quite awhile for this testing. I looked for the topic about it and can't find it. Figured at cluttered as it was it would be better to start a new one anyway.
Today we finally got the time to dyno test the Invidia, Works and Ebay 02 housings.
I got lucky today and the weather from the time we started testing to the time we finished didn't change, the dyno room was 82 degrees when we started this testing and was 81.9 degrees when we stopped.
All of the runs were done starting at the same coolant temp, 162 degrees, a pull was made, datalog was saved and then another run was done immediately. So 2 back to back runs for each part, then the car was shut off and the parts were changed.
I did all runs in 3rd gear, sat at a steady state cruise in 3rd gear at exactly 2,000 rpm, when the coolant temps reached 162 degrees I'd go to WOT. The dyno recorded from 3,000 rpm to 7,000 rpm.
We started with a dyno run of my RS just the way it was from the Mitsubishi VS Subaru Showdown. The ran 11.11 at 124 mph.
We then pulled the down pipe off the car, our production V-Band style. Made a new downpipe with a 3" flange to work with the Works and the Invidia 02 housings.
We then put this 3" flanged downpipe back onto the car and dyno'd it again. No change at all in horsepower or torque. NONE, NADA, ZERO. As I said in the other topic, making that flange and inlet 3" would do nothing if the outlet of the 02 housing still remained 2.5". I was correct.
Results from the stainless steel ceramic coated 02 housing we sell with the 3" flanged downpipe:
Maximum horsepower was 373 and maximum torque was 388. Average HP was 326 and average torque was 330.
Next we pulled our 02 housing off, installed the Works 02 housing. The Works housing fits, all the bolts can be installed, the 02 sensor port is in the correct spot. The results:
Maximum horsepower was 369 and maximum torque was 385. Average HP was 320 and average torque was 325.
Next we pulled the Works housing off and installed, or attempted to install the Invidia. Bottom line is it fits like crap. Two bolts will actually go in, one or two other are impossible and a third is also crap. There is a hole that has been welded shut on the housing from a mistake from where someone thought the 02 sensor should go, then they moved it to a different spot which is also a freaking mistake as the factory 02 sensor wiring is stretched so tight that it is going to fail. Not impressed with the thought that went into this part. From a performance design though, looking at it I would have guessed the power would have been really good. The results:
Maximum horsepower was 369 and maximum torque was 385. Average horsepower was 317 and aveage torque was 322.
Bottom line is pretty simple here. The car doesn't need, want or benefit from a huge 02 housing or from a 3" flange on the downpipe. You are best off to run the E-bay style housing that is a fraction of the cost, fits and makes the most power we have seen from any of the housings.
Below is the dyno sheet. It isn't difficult to read if you take a look at the numbers at the bottom. I took the best pull of the two for each part. Run #1 results are of the Ebay style housing, #2 is the Works and #3 is the Invidia.
You will notice peak boost was 34.8 psi the Ebay, 34.5 on the Works and 34.3 on the Invidia. IF someone wants to attack me for .5 psi feel free. I am using the AEM boost controller and nothing was touched.
I feel this is probably the absolute best test we have ever performed as the weather, coolant temps, AIT's and such all were the same for each test, normally the weather and such varies somewhat. Not the case today.
Enjoy the testing and results.
Today we finally got the time to dyno test the Invidia, Works and Ebay 02 housings.
I got lucky today and the weather from the time we started testing to the time we finished didn't change, the dyno room was 82 degrees when we started this testing and was 81.9 degrees when we stopped.
All of the runs were done starting at the same coolant temp, 162 degrees, a pull was made, datalog was saved and then another run was done immediately. So 2 back to back runs for each part, then the car was shut off and the parts were changed.
I did all runs in 3rd gear, sat at a steady state cruise in 3rd gear at exactly 2,000 rpm, when the coolant temps reached 162 degrees I'd go to WOT. The dyno recorded from 3,000 rpm to 7,000 rpm.
We started with a dyno run of my RS just the way it was from the Mitsubishi VS Subaru Showdown. The ran 11.11 at 124 mph.
We then pulled the down pipe off the car, our production V-Band style. Made a new downpipe with a 3" flange to work with the Works and the Invidia 02 housings.
We then put this 3" flanged downpipe back onto the car and dyno'd it again. No change at all in horsepower or torque. NONE, NADA, ZERO. As I said in the other topic, making that flange and inlet 3" would do nothing if the outlet of the 02 housing still remained 2.5". I was correct.
Results from the stainless steel ceramic coated 02 housing we sell with the 3" flanged downpipe:
Maximum horsepower was 373 and maximum torque was 388. Average HP was 326 and average torque was 330.
Next we pulled our 02 housing off, installed the Works 02 housing. The Works housing fits, all the bolts can be installed, the 02 sensor port is in the correct spot. The results:
Maximum horsepower was 369 and maximum torque was 385. Average HP was 320 and average torque was 325.
Next we pulled the Works housing off and installed, or attempted to install the Invidia. Bottom line is it fits like crap. Two bolts will actually go in, one or two other are impossible and a third is also crap. There is a hole that has been welded shut on the housing from a mistake from where someone thought the 02 sensor should go, then they moved it to a different spot which is also a freaking mistake as the factory 02 sensor wiring is stretched so tight that it is going to fail. Not impressed with the thought that went into this part. From a performance design though, looking at it I would have guessed the power would have been really good. The results:
Maximum horsepower was 369 and maximum torque was 385. Average horsepower was 317 and aveage torque was 322.
Bottom line is pretty simple here. The car doesn't need, want or benefit from a huge 02 housing or from a 3" flange on the downpipe. You are best off to run the E-bay style housing that is a fraction of the cost, fits and makes the most power we have seen from any of the housings.
Below is the dyno sheet. It isn't difficult to read if you take a look at the numbers at the bottom. I took the best pull of the two for each part. Run #1 results are of the Ebay style housing, #2 is the Works and #3 is the Invidia.
You will notice peak boost was 34.8 psi the Ebay, 34.5 on the Works and 34.3 on the Invidia. IF someone wants to attack me for .5 psi feel free. I am using the AEM boost controller and nothing was touched.
I feel this is probably the absolute best test we have ever performed as the weather, coolant temps, AIT's and such all were the same for each test, normally the weather and such varies somewhat. Not the case today.
Enjoy the testing and results.
Interesting, I lost 20 hp from the Works O2 housing. They are checking to see if there are any other factors that may have come into play. But i'm on the same page at this point as you.... not wroth $450 dollars.
so dave what were the gain's. meening ebay did 3hp1 tr works did 2hp1 trq. didi miss something. what was the gains befor you put anything togeather. i maty of just miss read or understud
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Originally Posted by evodan2004
so dave what were the gain's. meening ebay did 3hp1 tr works did 2hp1 trq. didi miss something. what was the gains befor you put anything togeather. i maty of just miss read or understud
Dave had dynoed the Ebay 02 to gain ~13whp IIRC.
Originally Posted by anjapower
you didn't understand. the gains are not discussed in this thread...just the deltas amongst the 3 02 housings.
Dave had dynoed the Ebay 02 to gain ~13whp IIRC.
Dave had dynoed the Ebay 02 to gain ~13whp IIRC.
Guys, I don't know why you're calling out Works like that. So, Dave's testing shows that the Works o2 housing is no better in terms of power and is a little bit less powerful. Ok, fine, but is that the only reason to get the Works housing? No, it is a cast housing, so it is very sturdy, and it also has the factory brackets to support the turbo and manifold unlike the SS O2. Likewise, with the SS O2, it is very thing metal, so we are not yet sure how long they will last. Hopefully, they last indefinitely, especially with the coating, but we know they aren't as strong as the cast housings. For $100 or less, though, it's pretty much worth the risk. Hell, if it breaks in 2 years, you can just put on another one, right?
Anyway, I don't think this warrants a bunch of people calling out Works to have them explain themselves. They may very well get 5whp/5wtq gains in their own testing if they took the time to do it for all we know, or they may get the same results as Buschur. They're DP, HFC, and cat-backs don't make anymore power than other exhausts, but people still pay assloads for them because of their "fit and finish." This o2 housing is really no different...you pay more for the Works name and quality, not for more power.
Anyway, I don't think this warrants a bunch of people calling out Works to have them explain themselves. They may very well get 5whp/5wtq gains in their own testing if they took the time to do it for all we know, or they may get the same results as Buschur. They're DP, HFC, and cat-backs don't make anymore power than other exhausts, but people still pay assloads for them because of their "fit and finish." This o2 housing is really no different...you pay more for the Works name and quality, not for more power.