Hey guys..just wondering..if/when I install a catted x do I need a re tune? Im keeping my manifolds and already have on the car a m/f cat back 2.76 pulley,sbtb,kn fipk..and a few other minor mods...that's how I bought the car. Id like to install a catted x...will this require a re tune? Any input is welcome. Thanks in advance.
