  In this paper, we calculate the Fourier coefficients of the paramodular twist
of a Siegel modular form of paramodular level $N$ by a nontrivial quadratic
Dirichlet character mod $p$ for $p$ a prime not dividing $N$. As an
application, these formulas can be used to verify the nonvanishing of the twist
for particular examples. We also deduce that the twists of Maass forms are
identically zero.
