I installed a Cold Air Intake
on my 03 GT, and after a couple of races I got a check engine light. I took it to auto zone and they said the computer said it was running lean. I asked him if it was my Intake
, and he said no. I only use super, and just replaced the irdium spark plugs. The light went off later that day. I took it to the dealership and they said it was my Intake
and that the engine was now getting less air with it. I think it was a bunch of BS. They wanted me to take it to them to have it installed for probally way too much. The light doesn't come on anymore. Honestly I don't know what to tell you, but that it happened to me also.