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Old 02-02-2005, 07:32 PM   #1
Deziwoo
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Default CAI on a wrx

so i was just talking to some ppl in the 2.0turboed section of NASIOC

and some ppl are saying that the CAI on a rex might not be the best idea.... i dunno but i'm gonna have a TurboXs EM system.....


just wonderin wut ppl here have to say? anyone here have one on their rex?

thanks guys

dez
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Old 02-02-2005, 07:34 PM   #2
fukamoto
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No point replacing the intake system off the WRX; if anything, just put a K&N filter. I believe a CAI caused the WRX to run too rich or too lean. I forget. Happy Days told me a while back
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Old 02-02-2005, 09:41 PM   #3
veightkiller
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and using a CAI that's located underneath yung fenders might get wet and water might run into ur engine just a precaution... for the rainy days co'z u live in raincouver
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Old 02-02-2005, 11:19 PM   #4
fukamoto
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Quote:
Originally Posted by veightkiller
and using a CAI that's located underneath yung fenders might get wet and water might run into ur engine just a precaution... for the rainy days co'z u live in raincouver
Hydrolock
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Old 02-02-2005, 09:59 PM   #5
tora
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Yup, don't bother with a CAI.
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Old 02-02-2005, 10:14 PM   #6
Deziwoo
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awww shoot........ i've been running with one for a while now!

crap

time for a short ram i guess
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Old 02-02-2005, 10:22 PM   #7
Deziwoo
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anyone sellin one? teehee

****!
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Old 02-02-2005, 10:43 PM   #8
AllWheelDrift
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Um, short ram isn't considered any better. Best to stick with stock.
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Old 02-03-2005, 12:10 AM   #9
Deziwoo
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AH CRAP!

nothing i ever do is right! lol
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Old 02-03-2005, 12:13 AM   #10
kool168
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Quote:
Originally Posted by Deziwoo
so i was just talking to some ppl in the 2.0turboed section of NASIOC

and some ppl are saying that the CAI on a rex might not be the best idea.... i dunno but i'm gonna have a TurboXs EM system.....


just wonderin wut ppl here have to say? anyone here have one on their rex?

thanks guys

dez
http://forums.nasioc.com/forums/show...hreadid=477393

seriously... not a good idea to run CAI on WRX, STi should be okay (only for some well known brand.)

but you said you are going to get UTEC anyways, BUT UTEC won't take control until you press your gas panel more than 30%. so your stock ECU will still take control of your car MOST OF THE TIME. so your car will still run lean MOST OF THE TIME.

get a reflash which tuned for intake will be better for your need if you really wanna get a intake. but wut's the point?
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Old 02-03-2005, 12:55 AM   #11
Woody
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Quote:
Originally Posted by kool168
seriously... not a good idea to run CAI on WRX, STi should be okay (only for some well known brand.)

Sorry if this sounds like a complete newbie question, but why would a CAI be ok for a STI and not a WRX?

Woody
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Old 02-03-2005, 01:42 AM   #12
kool168
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Quote:
Originally Posted by Woody
Sorry if this sounds like a complete newbie question, but why would a CAI be ok for a STI and not a WRX?

Woody
STi runs pig rich from stock, (that's why all STi shoot big flames out when they run catless TBE) where WRX runs rich, but not that RICH.
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Old 02-03-2005, 02:58 AM   #13
420WRX
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I'm running straight 4" pipe into the fender and I've just got some patches to keep the intake from sucking in too much hot engine air. I put a bit of a twist on the usual snorkus removal, and I took out the black plastic under-hood scoop thing that directs air(and water) into the fender.

I could be wrong, but lately when I'm really going for it the car seems to be 'mushy' at peak output, almost like it's running rich or something.

So I was thinking I should try to add the scoop back in but I want to avoid having it installed on a rainy day.. Argh!
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Old 02-03-2005, 01:11 PM   #14
kool168
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Quote:
Originally Posted by 420WRX
I'm running straight 4" pipe into the fender and I've just got some patches to keep the intake from sucking in too much hot engine air. I put a bit of a twist on the usual snorkus removal, and I took out the black plastic under-hood scoop thing that directs air(and water) into the fender.

I could be wrong, but lately when I'm really going for it the car seems to be 'mushy' at peak output, almost like it's running rich or something.

So I was thinking I should try to add the scoop back in but I want to avoid having it installed on a rainy day.. Argh!
i assume those subaru techician who designed our cars are much smarter than most of us. so "the black plastic under-hood scoop thing that directs air" shouldn't direct water... even if it does direct the water in there and it won't do any harm to our cars. there must be a purpose for that thing under the hood otherwise they wouldn't put it there.
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Old 02-03-2005, 03:23 AM   #15
tora
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You really don't need to worry about rain. it will not cause your engine to hyrdo lock. Unless you hit a huge puddle and suck a mass of water into the engine, you are free and clear.
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Old 02-03-2005, 03:45 AM   #16
Ken
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Tora will pee on it if you don't watch out. That's what he means.
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Old 02-03-2005, 11:27 AM   #17
420WRX
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Yeah? I guess if rally guys intentionally inject water, the occasional dose of rain water can't be so bad?
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Old 02-03-2005, 12:20 PM   #18
tora
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Quote:
Originally Posted by 420WRX
Yeah? I guess if rally guys intentionally inject water, the occasional dose of rain water can't be so bad?
Think of it this way....a lot of smaller planes (Cessna and others) will use subaru flat fours as their engines. These are locomacated right in the front and have basically direct air intake from right in front. These planes fly at reasonably high speeds (in comparison to our cars) and rain goes right into the filter and then into the engine. But with that amount of water the rain turns to mist and is all but gone by the time it get's past the throttle body, it does no damage to the engine. You really have to submerse it with a WASH of water before damage will result. That being said, a CAI that goes right to the bottom of the fender well, or "close" to the road is not a good idea in places that have lots of big puddles....if you hit a puddle and submerse the filter, or even rocket a big splash into it driving through a large puddle you will be prone to hydro-lock.
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Old 02-03-2005, 12:40 PM   #19
kwilson36
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Got me a AEM CAI ... never had a problem. Running stage 4 - the FMIC with EcuTek all tuned up. I deffinetly notice a difference when the cooler weather comes around.... then again the IC like the cooler air... I'll be going to short ram when i get my FM..

This arguement has been done to death. My oppinion... dont waste the money do the silencer delete and a drop in K&N and spend the money on Samco IC hoses and a bigger scoop to get more air flow across the IC..

-K
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Old 02-03-2005, 01:06 PM   #20
steve
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Does anyone have a stock airbox for sale?
pm me if so.
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Old 02-03-2005, 07:15 PM   #21
Uncle Ben
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My Trust foam short ram intake never caused any problems when I ran it. I've had other short rams that really messed with the MAF readings, but not that one.
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Old 02-03-2005, 10:54 PM   #22
rexilla
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I've had a APS CAI on all my rex's.... Read up on them here >> http://www.airpowersystems.com.au/wrx/my01/hfa.htm
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Old 02-04-2005, 03:16 AM   #23
Happy_Days
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the snorkel we have in our WRX's were meant to smooth out the airflow and make it more consistent -- what turbos like.

This argument is quite stale and if you search you'll find lots of stuff regarding it. -- and the same thing goes on -- the people that have it will defend it to death versus the opposing side.

My opinion = minimal gains for a decent chance to mess with your car.



ps. all places selling one will say good things about it..
It needs to be tuned to your car for proper/consisten results.
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Old 02-04-2005, 03:45 AM   #24
fukamoto
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Quote:
Originally Posted by Happy_Days
ps. all places selling one will say good things about it.. .
Not necessarily.
Almost all WRX owners that come to the shop ask me about intakes but I tell them not to bother and I highly go against recommending it. Would I have made a sale? Yes. But I don't operate like that. I tell them to save money for a catback exhaust and then go for a downpipe and reap the real benefits of a turbocharged vehicle.
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Old 02-04-2005, 11:24 AM   #25
420WRX
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I just removed the snorkus for sound reasons, I was not expecting performance gains..

I'm wasting $$$ on a BOV too..

My only concern is how much I degrade performance.. If it's alot I won't do it, bit if it's minor, and something I can make up for later on, then no problem.
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