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Old 07-09-2010, 12:19 PM   #1301
Lord Grippington
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Two things regarding the WRX seal- Don't trim the front out of your stock, front seal(dotted line in the recent pic). Air will blast up from the front of the radiator, thru ducts specifically placed to feed the ram-air scoop. Having the front seal intact will keep your engine bay much cleaner.

Second, I've had residential weatherstripping sealing the ram-air duct for over a year, roughly 30,000 miles, no degradation what-so-ever.
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Old 07-09-2010, 03:05 PM   #1302
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To clarify...sorry if I posted it bad.
You only trim the stock AFTER the wrx seal is in place. Otherwise it serves no purpose for the scoop. The seal wraps around the duct tightly as I mentioned before, making it impossible for more than average dirt to get in. Cutting the seal and then not sealing around the intake scoop is another story...

Only reason I went with the OEM seal was for perfect fitment. It has a bend to it with a rubber wall, not just a skinny seal. The holes are already there and it clips in nice and tight. I usually like to try a DIY approach but for this I didn't want to mess around.
I can post a pic later of the part off/on my car.
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Old 07-09-2010, 04:10 PM   #1303
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Quote:
Originally Posted by RaceFaceXC View Post
For a couple months, or weeks if you live somewhere hot. After that you just have a sticky mess and no more weather stripping.
You should look at my location ...It hasn't been under 100 degrees here in the past month, and I haven't had any issues.

If anything...save yourself $38.00 Find a wrx owner that has a sri and see if they'll give you theirs.
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Old 07-09-2010, 04:50 PM   #1304
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Yea or a scrap yard. Put on cleanly (prep area) good weather stripping should be fine.
Not sure where these prices are coming from but the part is $17-20 local or $26 shipped.
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Old 07-09-2010, 04:54 PM   #1305
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My price came from the local Suby dealership. That is why I went and bought $8 worth of weatherstripping.
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Old 07-09-2010, 05:01 PM   #1306
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Holy crap that's some crazy markup. I am hoping they quoted you on the wrong part.
My last car I had to drive almost an extra hour for major service because it was cheaper. Both were Acura dealers.
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Old 07-10-2010, 10:42 AM   #1307
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Quote:
Originally Posted by Lord Grippington View Post
Two things regarding the WRX seal- Don't trim the front out of your stock, front seal(dotted line in the recent pic). Air will blast up from the front of the radiator, thru ducts specifically placed to feed the ram-air scoop. Having the front seal intact will keep your engine bay much cleaner.
Correct.

Picture of my hood seal back on post 918.
Works good, last long. No need to trim anything. Lots of room for air to get in. This is not a RAM AIR duct or anything like that, so don't fool yourselves. It just picks up cooler air from in front of the rad.
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Old 07-11-2010, 01:34 AM   #1308
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Why cant we just trim our stock seal? Wont the air get to the duct just as well?
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Old 07-11-2010, 11:30 AM   #1309
wmdoucette
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The seal is there to keep bugs and dust and water and such out of your engine bay. It doesn't do a great job, but it serves a purpose. Cutting the seal will be of no benefit, so why do it?

Or do whatever you want, doesn't bother me.
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Old 07-11-2010, 04:25 PM   #1310
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Quote:
Originally Posted by wmdoucette View Post
The seal is there to keep bugs and dust and water and such out of your engine bay. It doesn't do a great job, but it serves a purpose. Cutting the seal will be of no benefit, so why do it?

Or do whatever you want, doesn't bother me.

Cutting your stock seal is of great benefit....other wise it blocks airflow to your duct......and I have been running mine that way for about 4 thousand miles with no difference in engine bay filth...
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Old 07-12-2010, 12:07 PM   #1311
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I bet there is minimal flow difference between a cut seal and an un-cut one. There are plenty of vents above the radiator that channel air directly into the WRX duct, and they are behind the front seal. I cut mine before I noticed the vents of course. When the air hits the radiator first, particles will stay in the radiator instead of clogging up the air intake filter. It's a great stock set-up, clean and effective.
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Old 07-12-2010, 01:25 PM   #1312
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Quote:
Originally Posted by Subyroo2.5 View Post
Cutting your stock seal is of great benefit....other wise it blocks airflow to your duct......and I have been running mine that way for about 4 thousand miles with no difference in engine bay filth...
I really do hate to drag this out, but what benefit is that? I know I know air flow to the duct and such, but could you perhaps put some numbers behind that? IAT? MAFv? I guess you can't really do a before after on that, maybe if I have time I'll pull my lip seal aside and go for a log ride.
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Old 07-13-2010, 02:22 AM   #1313
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You guys have to stop thinking that the wrx intake duct is some kind of ram air setup...cause it isn't
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Old 07-13-2010, 01:57 PM   #1314
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Quote:
Originally Posted by wmdoucette View Post
Correct.
This is not a RAM AIR duct or anything like that, so don't fool yourselves. It just picks up cooler air from in front of the rad.
out...
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Old 07-13-2010, 03:31 PM   #1315
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Cutting the weatherstripping doesn't do anything productive
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Old 07-13-2010, 07:26 PM   #1316
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The WRX trumpet can't pressurize the intake tract the union between the trumpet and the helmholtz resonator isn't sealed. The helmholtz resonator has several holes in it. The union between the resonator and the airbox isn't pressure sealed. All the WRX trumpet does is give the intake access to colder air
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Old 07-14-2010, 06:43 PM   #1317
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Quote:
Originally Posted by flightwatch View Post
Cutting the weatherstripping doesn't do anything productive
Yeah, it does. I have actual data to prove it, too. But without the correct seal for the new intake air source I couldn't say what happens. And the effect is minimal at highway speeds and most apparent at city driving speeds. besides, why would subaru design a funky hood seal for the turbo models if it could just use the same one for all 3 models?
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Old 07-14-2010, 08:08 PM   #1318
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EDIT: Never mind, I was confused because I stopped getting e-mails for this thread at random and missed a page.

Last edited by Soul Shinobi; 07-16-2010 at 12:18 AM.
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Old 07-15-2010, 04:57 AM   #1319
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Quote:
Originally Posted by RaceFaceXC View Post
Yeah, it does. I have actual data to prove it, too. But without the correct seal for the new intake air source I couldn't say what happens. And the effect is minimal at highway speeds and most apparent at city driving speeds. besides, why would subaru design a funky hood seal for the turbo models if it could just use the same one for all 3 models?
I would be interested in seeing that data. I can't see how cutting the weatherstripping would do a damn bit of good considering that the intake duct is already getting cool air from in front of the radiator. The funky hood seal is there to keep the hot engine-bay air out. I would also be interested in seeing the weatherstripping differences between a same MY WRX and N/A.
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Old 07-15-2010, 10:36 AM   #1320
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Sorry I opened this can and if I lead people in the wrong direction.

"And the effect is minimal at highway speeds and most apparent at city driving speeds."
Funny I cut mine for a more direct air path, because I do allot highway driving . But either works for me

Yes air flows over the radiator. But with it cut you can now clearly see the duct from the front of the car in the hood gap.(using a flashlight)
I have kept the cut piece of seal just in case anything negative came from this, but so far nothing has. Other than maybe the air filter getting dirtier faster, too soon to tell on that. I agree Flight the seal keeps engine heat out . I would think it also traps incoming air directly to the duct.

I would love to see some data also. No one can truly say this is or is not worth doing w/o any hard facts. Just using common sense, to ME it looked like a simple solution for a more direct air path.

If I'm wrong, it wouldn't be the first time
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Old 07-15-2010, 10:48 AM   #1321
Lord Grippington
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Flightwatch my buddy's got an '07 WRX, and the only difference in weatherstripping between his and my '06 2.5i is the piece that seals in the bigger air-duct. Otherwise it is the same. As mentioned earlier, our hoods have the holes for that piece, but lack the actual piece. Peace.
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Old 07-15-2010, 11:04 AM   #1322
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/\ Yep
Made things much easier for installing. Or if you used weather striping its a perfect guide to follow.
No wrx snorkus yet, but the beer coozie is holding up
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Old 07-15-2010, 11:49 AM   #1323
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ha ha coozie FTW!
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Old 07-15-2010, 04:20 PM   #1324
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What chuds said is logical. Cutting the stock weatherstripping in front of the intake duct would make one think that you would draw in more air....But, as Ty pointed out, the intake isn't pressurized because there are holes in the resonator. If the intake system was 1 solid piece without holes in it, it could pressurize...thus creating a form of ram air. All that the intake duct does is give the intake access to cooler air (and it makes the engine bay look much better.)

I am not saying that it is detrimental to cut the weatherstripping in front of the duct. I just want to know how it helps since the duct is already drawing in outside air from in front of the radiator. I also wanted to stop the whole "cutting my weather stripping gave me like 50 wheelz horsepowa brah" stuff that was starting to happen.
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Old 07-16-2010, 03:13 AM   #1325
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My Check engine light is on and i currently have the hybrid intake installed. I have had the intake on for almost a year. It just started to get hot, triple digit heat, and the check engine light comes on with the p0420 code(catalytic emissions). I installed the stock intake and reset and ran it for a couple weeks no light. Install the hybird and the light comes back on. only other engine mods are iridium plugs wrx axle back.

Any thoughts? will the o2 sensor spacer fix it and not mess anything else up?
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