Extraction of the strange quark PDF is a long-standing puzzle. We
use the nCTEQ nPDFs with uncertainties to study the impact of the LHC
W/Z production data on both the flavor differentiation and nuclear
corrections; this complements the information from neutrino-DIS data.
As the proton flavor determination is dependent on nuclear corrections
(from heavy target DIS, for example), LHC heavy ion measurements can
also help improve proton PDFs. We introduce a new implementation of
the nCTEQ code (nCTEQ++) based on C++ which has a modular strucure and
enables us to easily integrate programs such as HOPPET, APPLgrid, and
MCFM. Using ApplGrids generated from MCFM, we use nCTEQ++ to perform
a preliminary fit including the p-Pb LHC W/Z vector boson data.