Ah so your mechanic doesn't know **** about aftermarket upgrades then or thinks it's like an old 5.0 that needs MAF upgrade when doing injectors. Start with doing an idle relearn and go from there. Did you remove the air screen on your MAF when you installed the CAI?
Sold - Black 2000 Mustang GT, gone but definitely not forgotten
- Silver 2007 Corvette
Current - DHG 2001 Bullitt