Can you be more specific to what your code was developed for? Interstellar simulations are common in MHD, but significantly different from something like exploding wires which are a common benchmark for MHD codes.
In a recent publication I used a set of exploding wire experiments to assess conductivity data and the accuracy of my MHD code (J. Stephens, A. Neuber, Phys. Rev. E. 86, 066409 (2012).),