just got my 2001 explorer motor stock bottom end heads and intake are ported and matched . e303 cam 1.6 roller rockers 75mm tb with a 76mm mass air cal for 24S and 24lbs injectors with a 255 in tank fuel pump. i start fuel pressure at 40psi runs way to lean i have the pressure up to 55psi. now does lot better but sucks at w.o.t ran codes all it come up with running at lean limit.pulled the plugs there are white as ghost do you all think i need bigger injectors and running a a9l ecm. thanks all