K&N Typhoon CAI Need Tune?

[Templarjj75]

Hello, I Recently Installed A K&N Typhoon CAI on my 07 GT. After driving it for a bit, I got a CEL, with a lean code....Do I need a tune?? I apologize for my ignorance if its common knowledge now, but Ive been out of the Mustang game for a while..(2001). Any help is appreciated

 

[86GT351]

No tune needed

 

[Dino Dino Bambino]

If the intake tube diameter is larger than stock, the MAF transfer curve in the ECU needs to be modified in order to prevent a lean condition.