It's definitely possible, since modern car audio systems all rely on software for beating the system response into shape. It should be fairly easy to use software to update things like EQ adjustments, phase/timing adjustments, compression/limiter adjustments, low/high/band crossover adjustments. Every time our audio system powers up, the microcontroller reads these settings from the stored program and sends it to the SigmaDSP chip, which loads it before unmuting the outputs. Changing what the stored settings are will change system behavior on the next power up.
