racepak support isnīt the best,

i use the iq3 dash version (no log and gps) with my haltech ecu,
bus system only 3 wires are needed
shows all inputs,and other stuff much cheaper than buy all sensors separately

http://www.ebay.com/itm/Racepak-Wate...61cedb&vxp=mtr

i think racepak can work with haltech,motec and other ecuīs