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04-06 Ralliart Engine/Drivetrain (no forced induction)

Running Lean?

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Old Apr 26, 2007 | 04:17 PM
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From: Federal Way, WA
Running Lean?

After searching a little further I found the answer to my question... just a different section...

So my car is running lean according to Autozone ... since I now the ever so great CEL on.

How easily could this problem be resolved I've reset the ECU but it just comes back on after a few seconds of driving.

Could a local shop resolve this or is there something I can do myself to fix it?

Last edited by Optimus; Apr 26, 2007 at 05:09 PM.
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Old Apr 26, 2007 | 06:47 PM
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If you were nearby, I'd hook my laptop up just to see what your fuel trims are doing.

Did this start happening after you put on the SRI, or was there something else that happened?
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Old Apr 26, 2007 | 06:49 PM
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leaner the meaner
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Old Apr 26, 2007 | 06:51 PM
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Originally Posted by bluebyu36
leaner the meaner
Yes, right up until it all goes BOOM!

Your car will never be faster than when you're just beginning to melt the tops of the pistons.
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Old Apr 26, 2007 | 07:28 PM
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what could you do to fix this?
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Old Apr 26, 2007 | 11:40 PM
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Originally Posted by Myszkewicz
If you were nearby, I'd hook my laptop up just to see what your fuel trims are doing.

Did this start happening after you put on the SRI, or was there something else that happened?

I just put the SRI on last week i think it was wednesday... i don't really drive it too hard... got a 20 min commute then 20-45 min commute back home.
There isn't anything else I have done 'cept the UD Pulley and an Oil change all on the same day...

as far as overheating, will I notice the difference on my temp gauge or is this one of those things that I won't notice until its too late...??

Some info on the car:
04 Ralliart(obviously)
30,600(give or take a 50 or so)miles
only mods are in my sig - both done on the same day(I don't think that matters but who knows)
5 speed
regular oil changes

Last edited by Optimus; Apr 26, 2007 at 11:43 PM.
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Old Apr 27, 2007 | 04:50 AM
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Sounds like yours is doing the same thing mine did when I put my CAI on. My fuel trims slowly rose up to and over 112%, which tripped the "System too lean" code and the CEL. If I reset the ECU to get rid of it, I'd have another week or two before it came back.

The only way to really get rid of it is to put in some kind of tunable device (RRM piggy or SAFC) and adjust your airflow signal accordingly.
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Old Apr 27, 2007 | 05:25 AM
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Any reccomendations on SAFC's?
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