"CEL" anybody else had this problem?

i recently installed an aftermarket mas adapter and filter in place of my factory airbox. everything was okay for about 4-5 days then the other day my "CEL" (check engine light) popped up. i went to autozone to see what error code they could find and it said my engine was running lean. i haven't really felt any noticable difference in driving, but i'm not sure what to think.

i mean it could be a bad maf which i'll check later, it could be bad o2 sensor, or it could be it's not running lean at all.

given the problems which a lean running engine can cause, i'm trying to figure it out rather than just hoping it's not running lean, and waiting.

i'm just wondering if anyone else has came across this problem, and if so what they did about it?
also any other advice which might help me resolve this issue would be greatly appreciated.


Thanx in advance!

I replaced my whole intake with a custom intake made my myself and that had no problems at all. You shouldn't get a CEL from ditching the stock box and filter. It's odd that it was fine for 4-5 days, it should have thrown a CEL sooner than that if it was due to the intake changes. Is there a chance your fuel delivery is an issue?

This happens....make sure you cut the battery for about 45 minutes right after you do your mod. You should be fine after that. the ECU needs to check out the new mod.

The ECU is really that slow to throw a CEL?? I have never encountered one on the Mitsu, but on my other domestic cars when I got a CEL from a mod it was instantaneous. Maybe there is something to this study they are doing on the diagnostic systems on the 06's.

take the neg connection off, thousand 1....thousand 2...etc.... re-set it and yaw good to go.

wicked is right try taking it off for a few seconds and reconnecting it the battery cable that is.....this always worked for me

Disconnecting your battery will reset the CEL, but if the light comes back on- then you may have a legitimate problem. I'd recommend double checking your connections after the airflow sensor. Any intake leaks after the airflow sensor is unmeasured, therefore your not getting enough fuel for that amount of air that's entering the engine. Be sure you have all vacuum hoses connected and secured.
If you cannot get this issue resolved with your aftermarket setup , i'd highly suggest you go back to stock rather that running a constant lean condition.

Joel, CA

yeah make sure you check it, it could be something about your fuel connections or ignitions. but cel only happened to me ones, and that is when one of my plug wire connection came off. other than that, i, never had a cel problem w/ my mitsu's.

Yes, sometimes the CEL light takes 200 - 250 miles to illuminate on your dash. I would check the aftermarket sensor you purchased; maybe go back to the stock sensor for a short time to see if that resolves the problem. How many miles and what type of aftermarket sensor did you purchase?