  Core-collapse supernova science is now entering an era where engine models
are beginning to make both qualitative and quantitative predictions. Although
the evidence in support of the convective engine for core-collapse supernova
continues to grow, it is difficult to place quantitative constraints on this
engine. Some studies have made specific predictions for the remnant
distribution from the convective engine, but the results differ between
different groups. Here we use a broad parameterization for the supernova engine
to understand the differences between distinct studies. With this broader set
of models, we place error bars on the remnant mass and basic yields from the
uncertainties in the explosive engine. We find that, even with only 3
progenitors and a narrow range of explosion energies, we can produce a wide
range of remnant masses and nucleosynthetic yields.
