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Old Feb 14, 2008 | 11:29 AM
  #31  
STi2EvoX's Avatar
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Those gains are the same as that test in the "another x on our dyno" thread, where when they removed the filter all together, the car saw about 18 hp peak increase, but almost a 40 hp gain at redline! That means that your filter flows about as much as not having any filter at all! Awesome! Are you guys working on an intake system with full piping that leads all the way toward the turbo, and ic pipes?
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Old Feb 14, 2008 | 12:09 PM
  #32  
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Originally Posted by STi2EvoX
Those gains are the same as that test in the "another x on our dyno" thread, where when they removed the filter all together, the car saw about 18 hp peak increase, but almost a 40 hp gain at redline! That means that your filter flows about as much as not having any filter at all!
Which is impossible.

Something else is going on as it also leaned out more with the filter than without a filter. I'm thinking the new hotwire MAF needs some turbulance/restriction to read correctly.

That thread called "another X on our dyno" is the same exact X used in works testing.
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Old Feb 14, 2008 | 12:14 PM
  #33  
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folks rest assured, i will let my X ***** itself out once again and let shops do some dyno testing

cheers
nebo

Last edited by nebolic; Feb 14, 2008 at 12:18 PM.
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Old Feb 14, 2008 | 12:18 PM
  #34  
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Well, the gains are there, though, so what's the deal? I can't imagine that the air/fuel ratios aren't accurate, because the car wouldn't be making these gains from being leaned out the way that it is. Something strange is going on... but could it not be that the works filter just flows that well? Seems impossible to me too, but I'm just trying to figure this out. I wonder if the ecu is reacting to the mixture leaning out by trying to richen things up with the increased power, and that that's why the air/fuel still ends up being rich even with so much added air. The stock fuel system is pretty damn burly, so maybe the ecu is taking advantage of this?

Last edited by STi2EvoX; Feb 14, 2008 at 12:22 PM. Reason: typo
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Old Feb 14, 2008 | 12:28 PM
  #35  
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Originally Posted by STi2EvoX
Well, the gains are there, though, so what's the deal? I can't imagine that the air/fuel ratios aren't accurate, because the car wouldn't be making these gains from being leaned out the way that it is. Something strange is going on... but could it not be that the works filter just flows that well? Seems impossible to me too, but I'm just trying to figure this out. I wonder if the ecu is reacting to the mixture leaning out by trying to richen things up with the increased power, and that that's why the air/fuel still ends up being rich even with so much added air. The stock fuel system is pretty damn burly, so maybe the ecu is taking advantage of this?
Well there are alot of factors at hand here. Two different dynos, could be different loads, maybe different gears being used, different ambient temps, one dyno is using SAE correction, one isn't. MAF might need some some restriction to count the airflow correctly, etc etc etc

The nice thing is that, like I stated above, this EVO X used for testing @ WORKS is the exact same EVO X we had on our dyno in that thread you mentioned.

It will be coming back on our dyno with the new goodies and we can show the before/after gains of the new filter as well. More data is always good right?
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Old Feb 14, 2008 | 12:29 PM
  #36  
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Cool, glad to hear that. BTW, what's your shop's name?
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Old Feb 14, 2008 | 12:40 PM
  #37  
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nebo's X = the ***** and soon to be dyno queen.

razorlab, i'll be at your shop probably next friday or saturday. Will be in San Francisco for business on friday and depending what time i'm done, i'll swing by, if not friday then saturday.

WOOT WOOT more testing FTW

nebo
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Old Feb 15, 2008 | 01:34 PM
  #38  
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From: Infineon Raceway, CA
Originally Posted by STi2EvoX
Those gains are the same as that test in the "another x on our dyno" thread, where when they removed the filter all together, the car saw about 18 hp peak increase, but almost a 40 hp gain at redline! That means that your filter flows about as much as not having any filter at all! Awesome! Are you guys working on an intake system with full piping that leads all the way toward the turbo, and ic pipes?
We'll be doing some testing with various intakes and piping. Whether or not WORKS products come to fruition will depend upon the results of these tests. If they make things look pretty, but aren't showing significant gains, we'll probably devote our resources elsewhere.
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