The codes I pulled were P0174 (left bank too lean), P0171 (right bank too lean), and P0300 (misfire).
Forgot to mention that I had pulled a code for the MAF sensor a few months back, and that has been replaced as well.
I'm planning on checking the fuel pressure this weekend (need to borrow a gauge), and I'll also be calling the shop that installed the new fuel pump as well (that won't be until Monday).