I recently installed an Apexi S-AFC on my Evo, and I must say that the buscher tuning configurations showed some impressive gains I'm about to install a Walbro Fuel Pump, but I've read that the pump makes the evo run richer?? So does this mean I could essentially lean out fuel more? Or am I totally off?
Any help would really be appreciated!!!

 

No the FPR should handle that, the upgraded fuel pump will just make sure enough fuel gets there.

 

^^^^^^Very Correct!