Time-dependent infrared fluorescence (IRF) from the C-H fundamental and overtone bands was used to monitor the vibrational deactivation (by unexcited pyrazine) of pyrazine excited at 308 nm with a pulsed laser. The 1-color and 2-color IRF results were modeled with collisional master equation calculations in order to determine the temperature dependence of the energy transfer parameters. The experimental data cannot be modeled without invoicing a biexponential collision step size distribution, which implies that "super collisions" are significant. The results show that the energy transfer parameters are essentially constant at temperatures greater than the Lennard-Jones well depth, but at lower temperatures, energy transfer is enhanced. It is likely that vibration-vibration energy transfer dominates in this system.