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CAI and CEL light


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#21 Evil_VZ-T

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Posted 07 February 2011 - 11:42 AM

yeah, you can hear the induction alot over standard.

Get a scanner on it, id do it today for you, but your not in ACT.
once you know what code it is, then take the appropriate actions and eliminate different things.

Disconnecting the battery will reset the ecu, but if the problem is still there the light will come straight back on.

Plus the ecu may have stored codes in its history which is always good to find out.

It could have nothing to do.with the cai.

The biggest thing that will throw a code for the air flow meter is those oiled K&N filters. Especially when people smother them in the oil
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#22 Soop

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Posted 07 February 2011 - 11:44 AM

I've used oil K&N filters witha live wire MAF.
I've had no issues with the, but as you say, they can't be smothered in them (they're not designed to be smothered in them anyway!)
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#23 XXB4XX

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Posted 07 February 2011 - 03:19 PM

Talked to a mechanic at work, he reckons that if the MAF sensor was stuffed it wouldn't run properly at all.

He said that because of the different rate and perhaps angle that air would be moving past the sensor that it may just be confused and turning on the CEL.
I will properly clear it and then see if it comes back.

If it still comes back i may just put the airbox back on. :(
Has anyone ever ran the airbox with no resonator before?
If so, is there much induction noise?


err yeah.. ME.

I ripped off the resonator asap.. SPeak to PHATGT on lib.asn and get a HKS panel filter from him, I noticed the induction noise and standard BOV once that was in :)

#24 Soop

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Posted 07 February 2011 - 03:55 PM

Why a HKS filter?

Guaranteed a Ryco element will do the same thing.
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#25 alexGT

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Posted 07 February 2011 - 04:04 PM

Talked to a mechanic at work, he reckons that if the MAF sensor was stuffed it wouldn't run properly at all.

He said that because of the different rate and perhaps angle that air would be moving past the sensor that it may just be confused and turning on the CEL.
I will properly clear it and then see if it comes back.

If it still comes back i may just put the airbox back on. :(
Has anyone ever ran the airbox with no resonator before?
If so, is there much induction noise?


did you read my post? CAI's require MAF scaling to be changed! there is no other way around it!

Why a HKS filter?

Guaranteed a Ryco element will do the same thing.


I run a ryco filter in my car change it every 5k. $8. How many rycos can i get for one HKS :D

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#26 Soop

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Posted 07 February 2011 - 04:22 PM

Yeah exactly.

Ryco will flow more the 500hp, so really??
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#27 Alex

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Posted 07 February 2011 - 05:35 PM

Because, according to liberty.asn, the more letters you can add to your shopping list, the more heckers power your car makes.

+1 for Ryco should you return back to standard airbox.

+ 1 for pod here. Yeah, I hate them, but mine hasn't given me any grief whatsoever in my CAI. The only advantage for me running one is that I can no longer fit my original airbox.

#28 Soop

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Posted 07 February 2011 - 07:24 PM

Thats the ONLY time I can see a real reason for using a pod. Even then I would look for every way possible to maintain the airbox.

Laminar airflow is more important then mass flow. IMO its nigh impossible to accuratly tune a car with a MAF sensor giving dodgy readings.
TSM

#29 hawks_123

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Posted 07 February 2011 - 10:07 PM

did you read my post? CAI's require MAF scaling to be changed! there is no other way around it!


Well to be honest no, was at work so didn't have a chance to look up about Laminar flow until now, just asked one of the mechanics.

Besides that i checked the codes basically says the MAF sensor isn't reading properly. I erased the codes i'll see if it comes up again.

Anyone have an ideas? Otherwise i'll just put the box on without the resonator.
If it's broke use a cable tie.

#30 camoshop

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Posted 07 February 2011 - 10:13 PM

Because, according to liberty.asn, the more letters you can add to your shopping list, the more heckers power your car makes.

+1 for Ryco should you return back to standard airbox.


thats all i use and that nice bright yellow colour haha u can see when it dirty :P

#31 XXB4XX

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Posted 08 February 2011 - 07:47 AM

I got the HKS panel for the GT, $70.00 delivered or something like that, and it's re-useable, really hi-flow compared to standard, and non-oiled.

Win-Win.

#32 camoshop

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Posted 08 February 2011 - 07:56 AM

I got the HKS panel for the GT, $70.00 delivered or something like that, and it's re-useable, really hi-flow compared to standard, and non-oiled.

Win-Win.

so does it say hi flow on the packaging :P i dont think they would make that much noticeable difference !! so back on topic =]

#33 Evil_VZ-T

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Posted 08 February 2011 - 08:45 AM

Lol, so much technical jumbo going on here, but getting no where.

Clean your airflow metre and reset the codes and off you go. You would of disturbed any dirt or dust when you fiddled around, this would of contacted the hot wire and given a false readung, hence the CEL.

Standard, ryco, sakura, coopers are all fine for your car. If you want to be picky go genuine.
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#34 acres

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Posted 08 February 2011 - 11:32 AM

I doubt the airflow being laminar or not will make bugger all difference. The turbo will quickly make short work of any "smooth" air.

#35 Soop

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Posted 08 February 2011 - 11:45 AM

Its redundant once it gets to the turbo as its already gone through the MAF and been metered.
If what the MAF is reading is incorrect your timing and fuel trim will be up the shit.
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#36 XXB4XX

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Posted 08 February 2011 - 12:14 PM

this laminar bullshit and so forth won't throw a code..

i had the most random setup going against all odds on the B4 and it never spat a code out once..

I had one mega long pipe in the guard, and supposedly it's bad cause it will suck up water = Bullshit.
I had on oiled Uni-filter on there, supposedly oil gets in and ruins the AFM = Bullshit.

Maybe I was one lucky mug, but all I experienced was a massive increase in intake sound and boosting a little quicker = WIN

My honest thought?? get rid of the injection setup and AFM and o2 sensors, and get a Rochester 600cfm carby put on there.

All cars should be fuel guzzling carburettored dinosaurs, where if it breaks down you can fix it with a pair of pliers some gum and elbow grease.

#37 Soop

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Posted 08 February 2011 - 12:34 PM

I agree with everything you just said. :D

Except that improper flow over the MAF not throwing a code.
The MAF wont through a code, but the PCM will when it goes "WTF, why isn't anything adding up??"
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#38 XXB4XX

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Posted 08 February 2011 - 01:46 PM

Well I'm expecting mine like everything else on every subaru, to die.. so I have a spare..

hence why i'm hunting down a spare cheap VF38.. I know it will be next.

#39 Evil_VZ-T

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Posted 08 February 2011 - 02:24 PM

Lol, convert it to twins when it fails
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#40 XXB4XX

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Posted 08 February 2011 - 02:36 PM

Lol, convert it to twins when it fails


there is a B4 front cut on ebay for $3000

If someone is willing to do the conversion for me, i'm in.. they can take my single setup as payment.




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