CAI need info fast!

[MetalNeverDies]

ok so my friends just made thier own CAI's for his dodge v8 truck and then my other friend just made one for his protege5 wagon is this a bad i dea for me to make my own too. they bought piping and filters at autozone... seems like kinda a cool project. they also kept thier MAF's and got a dry sack for it. is this a bad idea or will it be harmless? i need to know soon cause they are going to build mine with me tonight at 8

[sebhockey]

I haven't heard anything about a N/A motor and intakes, but at least make it a short ram and not a cold air since you take it off road.

[RoadRunner]

As long as it's done right, you will be fine.

Use a decent filter though... K&N or something that's name brand.

[Azewaldo]

Do they know anything about modern ECU engines? From my research in aftermarket CAI & short ram it seems like you'd be running a pretty high chance of throwing the ECU an error if the diameter & the airflow isn't right with what the ECU expects.

I'm no expert in this area, but I think you'd want to test the DIY unit while measuring fuel/air ratio & checking ECU error codes as soon as (if) you get them.

My 2 cents, which is probably about what it's worth. Good luck.

[BlueRu]

I agree AZ because you dont have any way to tell if your putting too much air into the motor. the ECU expects a certain amount and if it is exceeded then you could have problems with fuel burning to lean and such. THATS NOT A GOOD THING at all! You can do some major damage to your car if you do that! Second with it being a DIY thing make sure you make a place for you mass air flow sensor. i would also make a Short ram since your going to be going through mud....... Third just save the cash and buy the SPT one. Then you dont void you Stealership backing (cant spell warantee).

[RoadRunner]

You don't have to worry about too much air. That's what the MAP or MAF is for. It will tell the ECU how much air there is and compensate the AF ratio.

[BlackParis]

All I did was get a 6$ filter adapter and filter, to install on the end of the maf, then put a 3inch stainless teel pipe in between the maf and the black box off the throttle body, Just to get rid of the Corrogated rubber hose... You wont gain anything but noise from doing this... if anything you might lose hp unless your motor has upgraded cams, and tuning.....

The black box acts as a catch basin for the breathers so I dont recomend deleting that, (i know from experience)...

Also If you can make you fit the Gonzo Nose back on the pipe, that has an important factor on pressure waves that travel backwards.... If those waves aren't addressed properly you are losing power, for the sake of noise...

Over all the stock Subaru intake is AWESOME... if you want noise without sacrificing power, then just get the Snorkus Delete Elbow or figure out how to make your own...

http://fastwrx.com/insnre.html

[MetalNeverDies]

ok so if i make it a short ram would i be ok? and what if i just took the stock tube and put and steel tube into that so i could have a cone intake. would it sound better but still be safe?

the other thing is that i dont have the little scoop that goes in the front by the grille because i dont have a wrx or sti motor set up i have the 2.5 rs which only has black air box and it is missing that filter that is right under the hood scoop there is a black plastic piece acting as a lid on that.

[lorenkb]

You don't have to worry about too much air. That's what the MAP or MAF is for. It will tell the ECU how much air there is and compensate the AF ratio.

If it's MAP, then nothing to worry about. MAF on the other hand is not as easy. All the reading I've done over at enginuity (open source ECU tuning) points to not messing with the intake, or buying one that is proven to work, because the MAF sensor is easy to screw up. If the airflow in the new intake is turbulent you can fool the sensor into reading a different amount of air then what is really present.

If you have a lamda sensor you could verify that the engine was still running the same air/fuel misture with the new intake. Otherwise I'd say hold off on the DIY until you have the proper tools to make sure you aren't doing damage.

[BlackParis]

the other thing is that i dont have the little scoop that goes in the front by the grille because i dont have a wrx or sti motor set up i have the 2.5 rs which only has black air box and it is missing that filter that is right under the hood scoop there is a black plastic piece acting as a lid on that.

I also have a 2.5rs

That black box is supposed to be closed... On turbo cars the Intercooler sits under the hood scoop, the air filter is actually the same part number as ours, and sits in the same location as ours on the left side of the motor....

I'm recomending you just get a snorkus delete elbow if you really have no idea what your doing, or what your buddies are doing ;) All the Snorkus does is capture resonating frequencies and imposes a slight restriction on the intake.. If you use the Elbow your intake is as loud as a CAI, and it gives about the same amout of restriction as the stock snorkus (a good thing for your motor and HP)... its 40$ for a well designed piece of Plastic that Proven to work....

ALSO... You CAN just delete the Snorkus, but may risk sucking up dirt/water from your inner fender area, and you eliminate the slight restriction that is designed into the system for several reasons... I do not recommend this unless you dont really car about anything but noise....

Basicly if you arent an AirFlow Engineer, then dont attempt to make your own witht he idea of claiming more power... Nice CAI cost OVER 150$ for a reason, they are DESIGNED mathematically and TESTED to increase HP over stock... Think about it... If a single Bent piece of 3inch pipe, not mathematically tested/designed, would give more HP, and work as well for emissions, then Subaru would probably use it, as it would be cheaper than the setup they have...

[Drew84]

The Cobb SF intake is very nice and made of plastic unlike the SPT one. No heat transfer.

[MetalNeverDies]

*whole story please read need help* i tooka post i did just copy and pasted and then added some qustions/ responces to what people already said before this post*

so my friends said they made their own but what ened up happening is they bought tubing and rubber gasket/ big long rubber rings and put them together with a cone. they sold all the parts to do it so it wasnt as cool as i thought it was gonna be but i ened up buying some tubing and made a short ram for my car. its pretty loud when you stomp it but when you just cruise along you cant really hear it to much. it doesnt have a gain in power for my car that i noticed, but it does sound pretty cool. as well as with it not comming stright out of the fenderwell like the stock one. or at least it seems to look like it does. i dont have to worry at all about dirt/mud/water. its not the pretiest or like name brand thing but it works. if i can get ahold of a camera i will post pics up. i am kinda pissed on how much i ened up spending though cause my friends where not paying attention and i ened up buying a few to many parts and ened up getting a few wrong parts. like this really big long angled tube that was liike 3 diff pieces. we ened up taking that apart and only useing one of them. my friend said he wanted them and was gonna buy some extra parts off me so thats cool i guess. and i am going to take back the extra parts taht are full pieces.

on the 2.5 rs engine there is black box under where the hood scoop should go and it doesnt have a filter like the wrx/sti. well i just ened up leaving that on makeing it easy to switch out if i need to for something or if i go to the "stealership" so it goes from the black box that goes into the engine to silver/metal pipeing that goes to my maf that i put into a new pipe that then goes to my cone. do you guys think it will help out with gas mileage at all or no?

total cost was around 150 but i havnt returned anything and now that i look back i feel super ricey and really dumb for buying it but it sounds cool and its not the worst thing that you could do. i would feel better buying some pipe from home depot or somethign and trying it but i was kinda pressured into it and was so excited just to hear my car with some balls added to it cause my friends mazda protege 5 sounded insane with just a short ram intake so i thought i would try it. still kinda pissed at mmy self for spending all that money on it

ok well i bought all the parts at autozone... yea i know its dumb please dont make fun it was like 1 am and i was up at 6 now i am kinda pissed about it should i just bring it all back and say it didnt fit or what? if i can get a real intake that fits a non tubo boxer engine then i rather do that other wise i feel like i just got butt rapped and i am really afraid of hurting my engine.... i got the parts at http://www.spectreperformance.com/ thats the parts we bought they are made from plastic type stuff and heat resistant. if its real prats like that can it hurt my car or do you guys think its ok? i put in the maf and ran it into the black box right above the engine. where your guys have the filter that says sti... well mine just has a lid on it so i ran it to that box. how bad did i screw stuff up?
**sorry about bad quality pics... i only have a web cam... no camera***
http://i206.photobucket.com/albums/bb198/metal_ftw/1.jpg
http://i206.photobucket.com/albums/bb198/metal_ftw/snapshot.jpg
Black box i ran it from.
http://i206.photobucket.com/albums/bb198/metal_ftw/7.jpg
http://i206.photobucket.com/albums/bb198/metal_ftw/6.jpg
MAF
http://i206.photobucket.com/albums/bb198/metal_ftw/5.jpg

http://i206.photobucket.com/albums/bb198/metal_ftw/1.jpg

every thing itook out. (stock air box and one air hose and filter)
http://i206.photobucket.com/albums/bb198/metal_ftw/8.jpg

[BlackParis]

*whole story please read need help* i tooka post i did just copy and pasted and then added some qustions/ responces to what people already said before this post*

so my friends said they made their own but what ened up happening is they bought tubing and rubber gasket/ big long rubber rings and put them together with a cone. they sold all the parts to do it so it wasnt as cool as i thought it was gonna be but i ened up buying some tubing and made a short ram for my car. its pretty loud when you stomp it but when you just cruise along you cant really hear it to much. it doesnt have a gain in power for my car that i noticed, but it does sound pretty cool. as well as with it not comming stright out of the fenderwell like the stock one. or at least it seems to look like it does. i dont have to worry at all about dirt/mud/water. its not the pretiest or like name brand thing but it works. if i can get ahold of a camera i will post pics up. i am kinda pissed on how much i ened up spending though cause my friends where not paying attention and i ened up buying a few to many parts and ened up getting a few wrong parts. like this really big long angled tube that was liike 3 diff pieces. we ened up taking that apart and only useing one of them. my friend said he wanted them and was gonna buy some extra parts off me so thats cool i guess. and i am going to take back the extra parts taht are full pieces.

on the 2.5 rs engine there is black box under where the hood scoop should go and it doesnt have a filter like the wrx/sti. well i just ened up leaving that on makeing it easy to switch out if i need to for something or if i go to the "stealership" so it goes from the black box that goes into the engine to silver/metal pipeing that goes to my maf that i put into a new pipe that then goes to my cone. do you guys think it will help out with gas mileage at all or no?

total cost was around 150 but i havnt returned anything and now that i look back i feel super ricey and really dumb for buying it but it sounds cool and its not the worst thing that you could do. i would feel better buying some pipe from home depot or somethign and trying it but i was kinda pressured into it and was so excited just to hear my car with some balls added to it cause my friends mazda protege 5 sounded insane with just a short ram intake so i thought i would try it. still kinda pissed at mmy self for spending all that money on it

ok well i bought all the parts at autozone... yea i know its dumb please dont make fun it was like 1 am and i was up at 6 now i am kinda pissed about it should i just bring it all back and say it didnt fit or what? if i can get a real intake that fits a non tubo boxer engine then i rather do that other wise i feel like i just got butt rapped and i am really afraid of hurting my engine.... i got the parts at http://www.spectreperformance.com/ thats the parts we bought they are made from plastic type stuff and heat resistant. if its real prats like that can it hurt my car or do you guys think its ok? i put in the maf and ran it into the black box right above the engine. where your guys have the filter that says sti... well mine just has a lid on it so i ran it to that box. how bad did i screw stuff up?


Wow .. Did you read the last couple of posts ???

I had the same thing you have, but decided it was pointless and losing power, so I put stock back on.. But I only spent 19$ on it... 150$ sees like alot... The stock Intake with the Snorkus Delete is your best bet, Junk that setup...

Also You have NO shielding around your Filter, so you are going to be drawing in REALLY warm air.... AND you changed the pipe that the MAF sits in... if that pipe flows ANY more air than what the MAF is programmed to see then you will be making your engine run lean... Hmm Warm air + LEAN = BAD!

Ohh... AND WRX with hood scoop have the SAME Part number airfilter and AirBox .... The Scoop is for the INTERCOOLER!!!! NOT THE INTAKE!

[BlackParis]

http://cgi.ebay.com/ebaymotors/Injen-05-RS-Subaru-2-5L-Cold-Air-Intake-RD1222_W0QQitemZ130147676827QQihZ003QQcategoryZ386 34QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

If your going to spend that much money get a reall intake that is designed to give HP, and wont kill your motor....

[MetalNeverDies]

*whole story please read need help* i tooka post i did just copy and pasted and then added some qustions/ responces to what people already said before this post*

so my friends said they made their own but what ened up happening is they bought tubing and rubber gasket/ big long rubber rings and put them together with a cone. they sold all the parts to do it so it wasnt as cool as i thought it was gonna be but i ened up buying some tubing and made a short ram for my car. its pretty loud when you stomp it but when you just cruise along you cant really hear it to much. it doesnt have a gain in power for my car that i noticed, but it does sound pretty cool. as well as with it not comming stright out of the fenderwell like the stock one. or at least it seems to look like it does. i dont have to worry at all about dirt/mud/water. its not the pretiest or like name brand thing but it works. if i can get ahold of a camera i will post pics up. i am kinda pissed on how much i ened up spending though cause my friends where not paying attention and i ened up buying a few to many parts and ened up getting a few wrong parts. like this really big long angled tube that was liike 3 diff pieces. we ened up taking that apart and only useing one of them. my friend said he wanted them and was gonna buy some extra parts off me so thats cool i guess. and i am going to take back the extra parts taht are full pieces.

on the 2.5 rs engine there is black box under where the hood scoop should go and it doesnt have a filter like the wrx/sti. well i just ened up leaving that on makeing it easy to switch out if i need to for something or if i go to the "stealership" so it goes from the black box that goes into the engine to silver/metal pipeing that goes to my maf that i put into a new pipe that then goes to my cone. do you guys think it will help out with gas mileage at all or no?

total cost was around 150 but i havnt returned anything and now that i look back i feel super ricey and really dumb for buying it but it sounds cool and its not the worst thing that you could do. i would feel better buying some pipe from home depot or somethign and trying it but i was kinda pressured into it and was so excited just to hear my car with some balls added to it cause my friends mazda protege 5 sounded insane with just a short ram intake so i thought i would try it. still kinda pissed at mmy self for spending all that money on it

ok well i bought all the parts at autozone... yea i know its dumb please dont make fun it was like 1 am and i was up at 6 now i am kinda pissed about it should i just bring it all back and say it didnt fit or what? if i can get a real intake that fits a non tubo boxer engine then i rather do that other wise i feel like i just got butt rapped and i am really afraid of hurting my engine.... i got the parts at http://www.spectreperformance.com/ thats the parts we bought they are made from plastic type stuff and heat resistant. if its real prats like that can it hurt my car or do you guys think its ok? i put in the maf and ran it into the black box right above the engine. where your guys have the filter that says sti... well mine just has a lid on it so i ran it to that box. how bad did i screw stuff up?


Wow .. Did you read the last couple of posts ???

I had the same thing you have, but decided it was pointless and losing power, so I put stock back on.. But I only spent 19$ on it... 150$ sees like alot... The stock Intake with the Snorkus Delete is your best bet, Junk that setup...

Also You have NO shielding around your Filter, so you are going to be drawing in REALLY warm air.... AND you changed the pipe that the MAF sits in... if that pipe flows ANY more air than what the MAF is programmed to see then you will be making your engine run lean... Hmm Warm air + LEAN = BAD!

Ohh... AND WRX with hood scoop have the SAME Part number airfilter and AirBox .... The Scoop is for the INTERCOOLER!!!! NOT THE INTAKE!

ok i will take it off but i had a bounch of dumb A**es at the 92x forum saying nothing that fits the turboed h4 will fit the non turbo and then i had other people telling me it was find and i couldnt find where that snorkle would even go. so i am going to take it all back today... sorry for my stupidity i was just confused and because it looked like it could possible be a real set up that it would be ok. and just the cone was 21. i am just gong to hope they take it all back and just claim absolute stupidity. sorry if i looked like a jack A** but i was just told so many diff things that it was like WTF. and sence it went ok i thought it was fine but i will take it back.... But bassically any intake that fits an h4 engine reguardless of it being turboed (wrx or sti) or not will fit on a stock 2.5 rs with no turbo?

[BlackParis]

STOCK: The Snorkus, and the Air Box with the filter in it are the same part #

The Maf and the Piping after the airfilter box is DIFFERENT.... NA cars get piped straight to the throttle body... and Turbo Cars get piped through the Turbo, Through the Ypipe, Into the intercooler then Into the throttle body...

That Intake I posted a link to on ebay is a porperly designed intake that wil not hurt your engine...

Not to be mean or anything but if your only purpose of your intake was to make noise, and not care about your motor or Power... then The intake you made is fine... You can take the chance of running it lean, but I personally wouldnt risk it...

However if you wait a month or 2 more Enginuity is supposed to be releasing the ECU definitions for Our 2.5 NA cars ;) So then you could ReProgram your ECU to to compensate for the MAF readings to work with the larger intake.... If you were to do this I would make some kind of heat shield... Wamr air is still killing HP...


On to the Snorkus Part... Check this out..
http://forums.nasioc.com/forums/showthread.php?t=691202

I was looking for photos of the snorkus, but that gives you a good description on its location.. Basicly it is in your fender....All you have to do is pull out your inner fender liner and unbolt the 2 bolts and install the snorkus delete elbow... Is Quite simple...

AND if all you want is NOISE, and arent worried about water injestation, and dont want to spend 40$ on a delete elbow, you can just rip out the Snorkus and call it a day...

[409industries]

Seriously, i would advise you to spend your money on a more constructive mod (swaybars, exhaust, ???)... Youll get more return for your money IMO.

On my RS i have only added a K&N drop in filter. The same goes for the STi, except i have also done a snorkus delete + GP Moto Elbow. These mods have not changed my airflow! My filters get very dirty very quick and i like being able to wash them (sometimes every other month). To keep your car running safely you dont want to mess with the MAF or A/F ratios with a cheap intake. Thats my $.02

[BlueRu]

Yea pritty much its just easier (and in most case cheaper in the long run) to buy one already made for your car. That way you know that its been tested and such and wont mess anything up. Second if Paris and Aaron say its a good idea or that they did it then its prob a safe bet for you too. Remember the saab's motor is the same as the 2.5 rs's. That means almost everything (barring manufacture spec. options and such) will fit your car. And seing as how Aaron and Paris both have an RS in their possesion they should know.

[MetalNeverDies]

yea i just was confused on how the tuboed verison ones went into the engine and how the non turbo did. i took it off got all my cash back and am just gonna do the snokus or the knn thing... caue my intake is pretty dirty. and i think ill jsut get handling things.