Conversation Between Tek-Niq and Smokeysti11

Hey sorry to select u to bug but I am new to forums n I wanted to make a post but I don't know how if u could help me with a question I have or if not maybe help me post my question. I don't have a max I do love them my name is smokey I drive a o5 sti n I'm an automotive tech for infinity but my friend asked me a question n I want to help him but I need info he has an 06 max v6 3.5 6mt n he wants to put headers I needed to know if it is wise to do it if it will trip any dtc's n also if it will need a tune he has simple bolt ons cold air a 2.5" cat back n that's all could u help me if not just message me u can't thanks dude