  A generalization of Bekenstein's Tensor-Vector-Scalar (TeVeS) model of
modified gravity has recently been proposed as an alternative to dark matter.
This model -- which we will refer to as g-TeVeS -- utilizes a Galileon-induced
Vainshtein mechanism to suppress modifications to General Relativity in strong
gravity regimes and so avoids the need to introduce the baroque kinetic terms
that typically exist in relativistic models of Modified Newtonian Dynamics
(MOND).
  We explore the behavior of this model in spacetimes with exact
Friedmann-Robertson-Walker (FRW) symmetry. The ability of the theory to recover
MOND phenomenology places restrictions on the theory's parameter space and it
is found that within an estimate of this area of parameter space the theory
cannot successfully approximate the Friedmannian cosmological behavior of cold
dark matter. It is found that much closer agreement may be recovered in other
regions of the theory's parameter space and the reasons for this are discussed.
