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Old 11-19-2012, 10:33 PM   #1701
RallyB
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Yeah that would all explain it, im positive there were no leaks post-filter but the previous owner before me never maintained the car, and i mean NEVER. he ran it as hard as he could for 2 years thinking he was a WRX in a 2.5i (something im too mature to do myself). as for the richness i did run before and after tests but nothing got too serious, i never said it got to a OMG level, some people just dont like running rich, most get scared by it. But yes now that my stock intake is back on it is still a bit rich, i can always smell it in the exhaust and its above what i consider normal on the gauge. I just saw the levels jump past what its running now with the SRI. I'm a bit of a perfectionist so that did bother me. I'm just sharing the experience i've had playing with the intake and until i have a turbo its something i won't be playing with again. As for the amount of your expertise well played, i'm a mechanic in training so i couldn't come near that....yet lol. I think had i had a tune for the SRI i might have had less issues. Instead i decided to get a Stage 1 tune after that wild ride i went through. Right now i'm running a AEM dryflow panel filter, couldn't be happier.
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Old 11-19-2012, 10:37 PM   #1702
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The AEM Dryflow filters are very good filters. They're made of the nanofiber media Donaldson developed for the DoD.
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Old 11-19-2012, 10:42 PM   #1703
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Exactly, sure puts K&Nasty to shame
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Old 11-20-2012, 09:30 AM   #1704
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Quote:
Originally Posted by williaty View Post
The AEM Dryflow filters are very good filters. They're made of the nanofiber media Donaldson developed for the DoD.
Not exactly.


I have pictures of one that lost the magic fiber, and began pulling it inside. It may work fine for a low power motor, but a 3076 @ 1bar PSIG was enough to pull the media in and coat my entire intake tract -- including a maf sensor rendering it dead.
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Old 11-20-2012, 02:02 PM   #1705
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I'd be curious if that's a failing of the media or the design of the filter by whatever brand failed on you. The nanofiber stuff should be less likely to implode than, say, pleated cellulose due to the improved surface-to-void ratio. However, if the filter itself was designed with inadequate support for the media, or if the filter spec'd was far too small for the application, I can see collapse resulting.
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Old 11-20-2012, 02:04 PM   #1706
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Default AEM dry flow for an 06-07 2.5i

Quote:
Originally Posted by williaty View Post
The AEM Dryflow filters are very good filters. They're made of the nanofiber media Donaldson developed for the DoD.
Does AEM make a dryflow for the 06-07 2.5i? Or can we use on meant for an 08-up?
They don't have one listed for an 06-07 2.5i, WRX, or STI.
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Old 11-20-2012, 02:07 PM   #1707
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Quote:
Originally Posted by subenoob420 View Post
Does AEM make a dryflow for the 06-07 2.5i? Or can we use on meant for an 08-up?
They don't have one listed for an 06-07 2.5i, WRX, or STI.
The AEM Dryflow, aFe ProDry, and AMSOIL EaA products are all the same media. I know AMSOIL makes one to fit the airbox you have, don't know about the other two brands.
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Old 11-20-2012, 03:25 PM   #1708
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Quote:
Originally Posted by williaty View Post
I'd be curious if that's a failing of the media or the design of the filter by whatever brand failed on you. The nanofiber stuff should be less likely to implode than, say, pleated cellulose due to the improved surface-to-void ratio. However, if the filter itself was designed with inadequate support for the media, or if the filter spec'd was far too small for the application, I can see collapse resulting.
I'll post pictures later at home, but it did not collapse. It was literally pulling the red fiber material through the filter and I have pics of the maf coated as well as the intake pipe to the turbine inlet.

It was an AEM brand Dry Flo. I moved to a K&N that I had to dry out some in order to not foul the Bosch MAF.

I was shocked as well I had to keep cleaning my maf with supposedly a dry filter. Once it built up enough to see, I figured out oh hey it's baking into the maf sensor element as it heats up... and oh hey it's all red fuzz.
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Old 11-20-2012, 04:49 PM   #1709
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Quote:
Originally Posted by gdoggmoney View Post
I'll post pictures later at home, but it did not collapse. It was literally pulling the red fiber material through the filter and I have pics of the maf coated as well as the intake pipe to the turbine inlet.
Ah! Red media is NOT the Donaldson nanofiber media! The Donaldson stuff is only available in a sort of light blue. I had thought the entire Prodry line was the Donaldson stuff, but obviously not. I wonder how you're supposed to know which is which before you can look at the actual product?
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Old 11-20-2012, 06:05 PM   #1710
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does anyone have any links for the piping needed for the hybrid setup i cant find anything other than the cosmo on ebay or amazon any links would be helpful all the links in this thread are dead. thanks greatly appreciated!
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Old 11-20-2012, 07:46 PM   #1711
RallyB
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AEM does make one for the 07 2.5i, im running it in my 07 2.5i right now
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Old 11-20-2012, 08:42 PM   #1712
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What's the part number? Did you find it on the website?
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Old 11-20-2012, 09:57 PM   #1713
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I found it on a website, dont quite remember what it was i'll try to find it again. you can also do a factory order for it at any advance auto parts store
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Old 11-21-2012, 01:37 PM   #1714
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Quote:
Originally Posted by williaty View Post
Ah! Red media is NOT the Donaldson nanofiber media! The Donaldson stuff is only available in a sort of light blue. I had thought the entire Prodry line was the Donaldson stuff, but obviously not. I wonder how you're supposed to know which is which before you can look at the actual product?
I do not think you can I think it is a you get what you get deal.


I'm curious though as I need a dry filter for the 3076 setup, the drivetrain is going to end up in my 89 syncro golf or 75 914. With a MAF for accurate lb/minute.
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Old 11-30-2012, 12:34 PM   #1715
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Hey guys, I was working on revising my intake design/production methods - its in the foam prototype stage, and looking back at Williaty's data logging i saw something I had a question about.

For anyone who's switched to a hybrid/CAI

For both the CAI/SRI and hybrid intakes, there is a low spot at 2000 RPM on the engine loading graph- I was wondering what this meant in practical terms. Is there a power flat spot at 2000 RPM? Has anyone noticed this after switching?

I remember hearing about people who didn't want to remove the so-called torque box, and was wondering if (If i'm right about the flat spot) decreasing the intake volume by replacing that box with a pipe was what caused said dip.

Just wondering since my subie is my DD, and a flat spot around 2000 wouldn't be fun in traffic.

Or am i reading the chart wrong? (also very likely)
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Old 11-30-2012, 02:52 PM   #1716
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Quote:
Originally Posted by tru1shot View Post
Hey guys, I was working on revising my intake design/production methods - its in the foam prototype stage, and looking back at Williaty's data logging i saw something I had a question about.

For anyone who's switched to a hybrid/CAI

For both the CAI/SRI and hybrid intakes, there is a low spot at 2000 RPM on the engine loading graph- I was wondering what this meant in practical terms. Is there a power flat spot at 2000 RPM? Has anyone noticed this after switching?

I remember hearing about people who didn't want to remove the so-called torque box, and was wondering if (If i'm right about the flat spot) decreasing the intake volume by replacing that box with a pipe was what caused said dip.

Just wondering since my subie is my DD, and a flat spot around 2000 wouldn't be fun in traffic.

Or am i reading the chart wrong? (also very likely)
You're basically reading it right, but it's a small enough dip you never feel it. The lack of engine loading down low is MUCH more about the exhaust header than anything on the intake side. If you want the car to pull in traffic, buy a TWE header.
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Old 12-01-2012, 03:28 PM   #1717
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Ahh that makes sense. Thanks!

I'd love to get a TWE header, except i have one of the unfortunate '98s with single port exhaust... that and a college student budget right now.

If I ever get super ambitious there's a welder and plenty of stock in the shops here, but knowing myself I'd want to try to tune the single port too, and I've got too many unfinished projects on my plate already
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Old 12-08-2012, 05:48 PM   #1718
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installed this intake setup on my second subaru yesterday. this time used a stock 2.2L intake piping i picked up for $2. had all the same hose fittings as my stock torque box style intake. love it.
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Old 01-20-2013, 05:46 PM   #1719
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Strange thing that's happened recently: I have a custom SRI on my '06 2.5i made by Extreme Motorsports (mistake on my end to have ever gone to them to begin with) and for YEARS the PCV system wasn't routed correctly yet I never had an issue when it come to CEL's and whatnot until I got it routed correctly. Fast forward to now, I had Andrewtech reroute my PCV to how it was supposed to be and now I got a CEL for P0171 (I think?) basically saying it's running lean. Pretty sure I still have the snorkus installed, but beyond that this is just puzzling.

Thoughts?
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Old 01-20-2013, 05:48 PM   #1720
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Either your front O2 sensor is on its way out of there's a post-MAF vacuum leak. Since you just had the intake worked on, my money is on a vacuum leak.
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Old 01-20-2013, 05:57 PM   #1721
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Quote:
Originally Posted by williaty View Post
Either your front O2 sensor is on its way out of there's a post-MAF vacuum leak. Since you just had the intake worked on, my money is on a vacuum leak.
See that's the really odd part because they actually UNDID everything they did to the PCV and still had the same CEL. Also, checked vacuum and there were zero leaks. However, you may be right with the sensor because they had to order one for me and I'm taking it back on Wed. Hopefully it's just the sensor. Just odd with the timing how after 5 years it happens NOW after the PCV gets routed correctly
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Old 01-20-2013, 06:02 PM   #1722
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I'm still betting they did something and caused a leak. The NA PCV system is nothing like the turbo PCV system so a lot of shops screw **** up because they're used to turbos.
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Old 01-20-2013, 06:07 PM   #1723
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Quote:
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I'm still betting they did something and caused a leak. The NA PCV system is nothing like the turbo PCV system so a lot of shops screw **** up because they're used to turbos.
I won't rule it out, but at least they back up their work. Andrew (owner) told me himself that car will not leave that shop until they get to the bottom of it. Based on this experience, I probably won't go through with getting a custom fab'd SRI on my next car since the gains aren't enough to justify the headache lol.

On a more positive note, I did hear that with the new 2.0i's the leaking head gasket is no more! Plus, the hatchback has a ton of cargo space with the seats folded down. Yeah...I think I'm sold.
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Old 01-20-2013, 06:27 PM   #1724
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That would be like the 12th time Subaru has said the HG leak was fixed, trust us this time!
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Old 01-20-2013, 07:13 PM   #1725
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That would be like the 12th time Subaru has said the HG leak was fixed, trust us this time!
Haha AT was saying the issue was resolved and believe me it's nothing but Subaru for them. I guess it's something that will have to sit back and watch.

I'll report back when the issue has been resolved.
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