I just installed a 9lb powerdyne on my 95 Cobra. It hs been running hot, even after replacing water pump, thermostat, and cleaning/flushing factory radiator. I am using a 60-40 water-antifreeze mix with 1 1/2 pints of redline water wetter. It runs in the o-r area of the temp. gauge while running 35mph and up, but appraches the right (l area) side of the gauge at idle. Timing is 8-9 degrees. No chip installed. I have ordered a diablo with a lower fan temperature setting for turning fan on. Has anyone installed a manual fan switch like the one described where the fan wire from EEC is tapped into and a switch installed? Which wire, etc? Thanks for anyone's help. By the way, the powerdyne has awesome power, is very quiet, and cool enough to allow you to rest your hand on it after use. Butch.