I was thinking more along the lines of creating a timer/relay box that would turn on the aux coolant pump, and also turn on the HVAC fan on high, using diodes to prevent the accessory system from back-feeding into any of the factory electronics. I think the main hassle would be the 30A feed required, since the ignition switch kills power to the porcupine in the "off" position (at least, I'm almost sure it does - need to double check). At the track, I'm doing this manually by setting the temp wheel and fan speed both to "MAX" with the key on. Unfortunately, on a W124/M119 this pulls about 40A or so, since the engine computers draw a lot of current (MAF, etc). The REST setup should cut that by at least a third, maybe half if the fan speed was less than maximum. Hmmmmm.

Eric, I'd think you'd be interetested in this too!