Awesome thread! Myself and Daniel (CNBLOW) actually made our own DIY Intercooler Water Spray kits by re routing the water hoses from the rear wiper washer motor outlet to spray water on the intercooler. This was controlled automatically via the Relay output on the Apexi Rev Speed Meter, which will trigger the spray motor when a certain RPM or speed is reached. Mine was set to start spraying at 4500RPM or 120kph.
Paul, are the kits you have listed above all available from Nengun ?