After installing headers and Catback exhaust, do I still have to program my ECU since there is more air flow. How about the fuel injecors? should I get them adjusted? because with more air flow I need more fuel injected in the cylinders right? Any thoughts on that?

 

no

unless you have some sort of engine management (AEM EMS, Greddy emanage, hondata w/ obd conversion, etc.). ecu reset is about as good as it gets.

injectors arent "adjustable".