then it could just be the egr valve. unless you want to save gas i wouldnt worry about it, that is if it was the real reason why the light went on.

 

You say you just installed new K&N air filters. You put oil on these new air filters. That oil gets on the fine measurement wire of the MAF senson, and messes it all up. The car sends a signal down that wire once in awhile, to clean it. That signal comes from the "Burnout Relay". Be sure this is working properly, and clean the MAF sensor wire.
I use only Spray Berryman Chem-tool to spar the wire of the MAF. Anything else leaves residue. This happens to me every time I re-oil after cleaning the filters. No matter how lightly I reapply.

 

wha..wha...what?....??

 

Go to AutoZone and get yourself a spray can of mass air flow sensor cleaner. I haven't seen it happen so quickly, but with an oiled filter like the K&N, your intake sensor can get gummed up and also collect dirt. I just cleaned my brothers sensor a month ago. It went from having an SES light on and running like crap, to being cleared up after spraying the sensor. And I watched the sensor turn from black back to blue. His car isn't a Camaro, but still the same concept.

 

ok before everyone keeps goin on about the k&n thing, stop......its not that, i didnt oil the filter because no oil came with it so that kinda eliminates that theory, but after more investigation its either the EGR valve as previously stated becuase its looking pretty haggard and old OR its the gas cap because the car was in an accident once and the repair-man or whoever fixed the tank just through a bunch of epoxy lookin crap all over there at the fill location, but the cap goes on and clicks as it should

also i havent been able to install a new EGR valve yet because im 1600 miles around the world...i have a new one, just not put on yet

 

To help rule things out, I would still clean the intake sensor, K&N filter or not. They can get dirty and give a faulty reading, simply from age and mileage.

 

for the record you said you bought one and installed it.... well those things come pre oiled and ready for installation everyone is trying to help you who has had similiar issues and your being rude if you dont believe me go back and read the packaging the filter comes in

 

never said i was trying to be rude...im not trying to, thats just how u read it.....id clean it if i had the chance to...im not in america