Dude, if you get it back and it still runs like poo, here is another test for ya:
1. Remove the pos and neg cables from the batt
2. Replace the intake with the stock.
3. Replace pos and neg cables and let car run for AT LEAST
15 minutes before you drive it..or until the radiator
fan turns on.
Drive it, is it running normally? If it is, you have solved it...or opened another can of worms. I am thinking that you will have the same problems once you install the stock intake.
Next thang to do:
Buy Berryman's B-12 Chemtool
1. Remove the pos and neg cables from the batt
2. Remove the MAF and look to see if you have a dark film on
the coils or the the open hole that you will see.
3. Spray the chemtool on the open coils that you
see...being careful not to apply unusual force.
4. Use a fan on a low setting using room temp and let it dry
completely. Give it about 30 minutes.
5. Check your MAF again and see if it needs to be sprayed
again.
6. If it looks good reinstall it into the factory intake
FIRST and see if you have fixed the problem.
7. If you have, great, reinstall your intake tube. If not,
you may need a new MAF.
What can and has happened before is that the MAF posts and the coils get so dirty that they can no longer calibrate the intake air component to mix properly and in some instances, it can lead to the MAF calibration being so bad off that it doesn't function correctly no matter how many times you clean it. Unfortunatly, with an open element filter like that on a CAI, it gets dirtier faster. Other things to consider. The MAF is kinda fragile so if you have banged it around any, you could have sent the calibration out of whack so that may lead to or be a problem. I have had this happen twice before so I would suspect that to be an issue....BUT...where the CEL is coming from...good question...you should get that code pulled if it shows again.
Hope that helps some
Rich