I installed this k&n intake Web://msperformanceonline.com/57-3061.html
on my awd 2007 trailblazer ss. I also put the performance 91 octane tune on the same time using the super chips cortex 2950. The check engine light came on a day after the install and it was a code for the motor running too lean not sure the exact code but now the light is still on but when using the cortex to read the code it says no codes to read and it wont let me clear the code but the light wont go off. Is there a downloadable tune for a cai because i was told that the cai on these motors will throw off codes like this or is there sumthing else that would be causing this light to stay on?