I'm new to the forum and looking for some advice for a '94 GT (170k miles). I had engine codes indicating my engine was running lean (181, 189 if I remember correctly). I replaced the fuel pump with a Walbro 155lph and had the injectors rebuilt and tested. I also replaced the head and intake gaskets, valve springs (TrickFlow), wires (Ford Racing), and cap/rotor (Accel). Now I got a 332 engine code (insufficient EGR flow detected) and the same lean codes plus a few more. The engine had an MSD ignition, BBK 65mm throttle body and speed chip (since removed) on it before I got it. Any ideas?