AbelNavyvet
Full Access Members
guys I need help building my 06 Expedition 5.4L. I currently have a 06 Exp that I replaced the gears from 323 to 373 gear ratio, I put Gibson headers, and K&N intake system. I want to know how to build my exhaust. can I remove my cats completely or do I need them? I have read on other Ford forums tat 2 1/4" piping is recommended is this true? what about custom tuning? I'm located in Texas 956 area code anyone do custom tuning?