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Old 06-27-2002, 10:43 PM   #1
tokigiracing
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Thumbs up COBB / APS Cold Air Intake

Just recieved and installed a COBB / APS CAI. Perfect fitment, easy install, good bracket location, huge filter, no CEL, great performance / acustic gains.
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Old 06-29-2002, 08:24 PM   #2
HollaFront
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2002 WRX
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Default I just took mine off

I have to admit, this is a great intake, but after a day of having it on, my CEL came on. So I drove with a check engine light on for about a month, well, I took it off because I was afraid that something bad might happen over time. Josh at cobb recommed that you get the intake installed with a tunned unichip. Anyways, it'll be back on in a couple of weeks when I get the Cobb/APS RT spec installed. Let you know how it goes, peace out.
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Old 06-30-2002, 04:14 PM   #3
tokigiracing
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I've had the CEL a few times in the past few days since I installed the intake. Everyone of them has been a System Too Lean Bank 1 code. Anyways, I'm looking to get a fuel management system soon, so that will take care of that. I think the problem comes from the fact that the intake is so huge and brings in alot of air, which kind of offsets the fact that the WRX runs so rich all the time.
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Old 06-30-2002, 04:23 PM   #4
supermarkus
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I thought Cobb recommended against running this intake without some sort of extra engine management, Unichip or otherwise.
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Old 07-01-2002, 10:12 AM   #5
tokigiracing
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I don't think so...I know they say that you shouldn't expect the full potential out of the intake without the "properly tuned unichip"....I've found that the ONLY place I'll get a CEL is in 4th gear at 3k rpm, I've never gotten one anywhere else...Apexi SAFC is on it's way though, so I'll be able to take care of it.
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Old 07-02-2002, 08:21 PM   #6
jblaine
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Default

Quote:
This system was designed to be used with a properly tuned Unichip system. Installation of intake without a Unichip properly tuned on your vehicle may result in less than optimal results.
I'd say that's fair warning and running too lean is "less than optimal"
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Old 07-05-2002, 02:46 AM   #7
tokigiracing
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Well, even if it runs lean it's still better performance than the AEM gave out...The ONLY place it runs lean is 3000 rpm, in any gear...Just avoid that spot and you'll never get a CEL. But I'm getting fuel management soon anyways.
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Old 07-19-2002, 01:12 PM   #8
Merdock777
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Default

I think that only the WRX needs the upgraded ecu. The 2.5 (acording to the COBB page) needs no extra modifications to get the performance it advertises.
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Old 07-31-2002, 04:41 AM   #9
Blue Mayhem
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are we there yet?
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Default how lean?

Does anyone know how bad off the stoichiometry of the fuel mixture is with the APS Intake on a WRX? I installed mine almost 3 weeks ago with the intent of getting a Unichip installed and tuned last weekend. However, those plans fell through thanks to the installer and I probably won't have another chance to get one installed until the early next year. I was going to order a A/F gauge to see how lean the system was running then make the decision whether or not to remove the CAI and go back to the stock air box. If its not too much off I might let it go, since I can feel the extra pull and I like the sound.
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Old 08-01-2002, 12:17 AM   #10
nhluhr
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Default Re: how lean?

Quote:
Originally posted by Blue Mayhem
Does anyone know how bad off the stoichiometry of the fuel mixture is with the APS Intake on a WRX? I installed mine almost 3 weeks ago with the intent of getting a Unichip installed and tuned last weekend. However, those plans fell through thanks to the installer and I probably won't have another chance to get one installed until the early next year. I was going to order a A/F gauge to see how lean the system was running then make the decision whether or not to remove the CAI and go back to the stock air box. If its not too much off I might let it go, since I can feel the extra pull and I like the sound.
With the APS intake on, my Autometer gauge at highway cruise reads somewhere in the orange (stoich) and with the stock intake, the gauge reads deep into the green (rich). I am convinced that the APS intake makes things too lean!
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Old 08-01-2002, 12:18 AM   #11
nhluhr
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Default

Quote:
Originally posted by tokigiracing
Well, even if it runs lean it's still better performance than the AEM gave out...The ONLY place it runs lean is 3000 rpm, in any gear...Just avoid that spot and you'll never get a CEL. But I'm getting fuel management soon anyways.
That's the worst advice i've ever heard. Sorry, but that's just plain dumb to recommend somebody avoid the 3000rpm range on a turbo car that starts to come on strong just below 3000 and hits peak torque somewhere just above 3000.
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