There are some weak MAF's installed on some of these cars. If you remove the sensor there should either be a letter or a letter and a number on it. If it's the letter only, then you have a weak sensor. These sensors are not an issue if the car is stock. Once you change the air flow, the issue may show up.
I checked mine today getting ready for the VaraRam intake and WaHooooo! It says K9... that means I will be safe installing this intake.
Check it out
http://www.vararam.com/camaro.html