I have recently ordered an 06 GT (will be ready for pick up in May). One of the first mods that I plan is for long tube headers and a X or H pipe (looking at MAC right now). My questions is do I need MIL eliminators? If so, where can I get them for an 05/06? Additionally, I have been doing some reading in other discussions about people having problems on earlier model mustangs with the check engine light coming on even after installing the MIL eliminators. Is this common? I have already ordered a Diablo Predator tuner. Will I need to reflash for the installation of new exhaust? If anyone can help, please do. I am new to all of the emissions stuff.