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Old 06-27-2005, 03:01 PM   #1
opious
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Question CAI on a 99 Impreza Outback Sport?

So... I've been reading up all day here at work (instead of working ) about air intakes and blah blah blah. As far as I can tell, I have the CA emmissions model with a MAP sensor and that little upside-down shovel for an intake behind the passenger headlight. The temptation hit me the other day to get some drier hose and run it from the second elbow out (from the engine) through the fender wall and attach it to the empty fog light mesh.
Is this worth it? I wouldn't have to change anything else because the air filter and MAP is right on top of the engine, right? Is there a way to build in a water trap?
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Old 06-27-2005, 03:10 PM   #2
kaisersouse
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Quote:
Originally Posted by opious
So... I've been reading up all day here at work (instead of working ) about air intakes and blah blah blah. As far as I can tell, I have the CA emmissions model with a MAP sensor and that little upside-down shovel for an intake behind the passenger headlight. The temptation hit me the other day to get some drier hose and run it from the second elbow out (from the engine) through the fender wall and attach it to the empty fog light mesh.
Is this worth it? I wouldn't have to change anything else because the air filter and MAP is right on top of the engine, right? Is there a way to build in a water trap?
I have the EXACT same vehicle and i just put in an intake (regular ram not CAI). I have heard very bad things can happen by just droppining in a CAI.

The little sensor plugged into your oversized airbox isnt a MAF, its an air temp sensor. Mine is currently zip-tied to another wire because there was no place to connect it into the intake.

this is info from the mechanic i had look at my intake after install. milage may vary, and for gods sake dont just take my word for it.
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Old 06-27-2005, 03:39 PM   #3
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No, Kaiser.. you've got a MAF (mass air flow sensor) equipped car. He has a Cali-emissions MAP (manifold absolute pressure sensor) equipped car. Two completely different air metering types.

opious, the '00-'01 impreza intakes should work on your car. Dryer hose is kinda weak. You should get a length of brake duct hose from a racing supply store if you want to route to the foglight opening. If you were having pipes bent, I'd reccomend using the AEM air bypass valve... you may be able to clamp the hose to the valve.



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Old 06-27-2005, 03:51 PM   #4
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Quote:
Originally Posted by Beaverboy
No, Kaiser.. you've got a MAF (mass air flow sensor) equipped car. He has a Cali-emissions MAP (manifold absolute pressure sensor) equipped car. Two completely different air metering types.

opious, the '00-'01 impreza intakes should work on your car. Dryer hose is kinda weak. You should get a length of brake duct hose from a racing supply store if you want to route to the foglight opening. If you were having pipes bent, I'd reccomend using the AEM air bypass valve... you may be able to clamp the hose to the valve.




The part where i said we have the exact same car? I meant it...i have a cali-car too.
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Old 06-27-2005, 03:54 PM   #5
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ps i didnt mean to come off as an ******* with that post. been a bad day
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Old 06-27-2005, 04:01 PM   #6
opious
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Awesome! That clears up a lot of questions for me! I have a pic of my engine with a circle around where i plan to deviate from OEM specs, but I can't figure out how to post it. If someone can clue me in I can post it. I'm wondering if I might be able to put that valve inbetween the plastic elbow and the brake hose. Also, is this mod worth the trouble on my engine?
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Old 06-27-2005, 04:09 PM   #7
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That is a MAF sensor, not an air temp sensor. Can you post a pic of exactly what you are talking about? Unless I'm, thinking about the wrong thing, but so far it sounds like your mechanic isn't very bright.
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Old 06-27-2005, 04:11 PM   #8
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kaiser, sorry about that.. I thought you were confused.. now I think I'm confused.

There's a sticky thread at the top of the Newbies & FAQ forum that has info on posting pics and almost anything else you could ever want to know about NASIOC.
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Old 06-27-2005, 04:20 PM   #9
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ill TRY and get pics tonite but i cant guarantee.

On the cali models the airbox is bigger than normal and mounted directly behind the engine. there are 3 hoses going into the fron of the box, along with a sensor of some sort. This is the sensor i am questioning. Wheni pulled it out the base was round, and the sensor itself is about 2 inches long and pretty much pointy.

but like i said ill find pics. i didn an image search and could only come up with a pic of MAF sensors. Looking at those i can tell you its NOT an MAF
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Old 06-27-2005, 04:38 PM   #10
opious
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OK, so here's the engine pic.

The circled part is where I was planing on starting the hose into the fender. Will the above mentioned valve fit between the hose and elbow there? The question mark is on a box that I am confused about... What is it!?!?
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Old 06-27-2005, 08:59 PM   #11
GuyLR
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The question mark part is a surge tank that dampens noise and adds volume to the system. Your '99 MAP intake can use any of the aftermarket 2.5RS MAP intakes or you can do a homebuilt like the ones I've made for my 2000 OBS. Both of mine take advantage of the hoodscoop to increase intake area and bring in cooler air. Then I use the fender intake for the other cool air source.


This one looks the business but is a little loud.



This one uses most of the stock parts including a hidden extra intake in the surge tank that you can't see. It's queter and makes more power.



Here's a link to another post on it with more details.

http://www.rs25.com/forums/showthread.php?t=31489

And here's a gallery with lots of pics.

http://number6.homelinux.net/gallery/album34?page=1

Last edited by GuyLR; 06-28-2005 at 04:44 PM.
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Old 07-05-2005, 12:55 PM   #12
opious
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i know the snorkel is off of a Yamaha Warrior 1700, but how exactly did you find it? when i search online i only get airbox systems and can't find anything that looks like what you've got on top.

...also, where can i find a "reed-tip" hose?
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Old 07-05-2005, 05:04 PM   #13
GuyLR
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Quote:
Originally Posted by opious
i know the snorkel is off of a Yamaha Warrior 1700, but how exactly did you find it? when i search online i only get airbox systems and can't find anything that looks like what you've got on top.

...also, where can i find a "reed-tip" hose?
I work at Yamaha and got the snorkle from a school unit that had the high performance kit installed that removes the stock airbox. Otherwise it only comes with the airbox assembly. Your best bet is to find a Yamaha dealer that has installed the performance kit on a Warrior and has the take off stock box.

I have found another snorkle from the intake of the 2005 YFM660RT Raptor ATV that might work even better. It is larger and straighter than the one I used but would not require the R1 airbox stuffer. The part number is 5LD-14437-00-00. I may try this one this one just to see if it works. The retail on it is $21.73.

The reed parts are Yamaha too. The tip can be installed directly in the bottom of the airbox cover but I added an outlet pipe and a length of hose to allow any water to fill the hose up first. It's made by installing a pipe in the bottom of the airbox (Yamaha p/n 31A-14419-00-00 pipe and 31A-14435-00-00 grommet) a short length of hose, 5LP-14148-00-00 and the reed drain is 63M-5316M-00-00, VALVE 1.

The online Yamaha Part Lists are here>
http://www.yamaha-motor.com/sport/parts/home.aspx


Last edited by GuyLR; 07-06-2005 at 12:24 PM.
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