[highrisk]

I have decided to go the dual electric fan route to help with running the A/C. My big concern is when to have the fans turn off and on. I have the Holley Sniper so I can program any combination I want to control the fans. One thing the Sniper has the ability to do is turn on fan #1 anytime the A/C compressor is on. I have a Mildon high flow 180 degree thermostat and the car normally runs 180 degrees, maybe a little more on a hot day, when I am driving at higher speeds. It was recommended on the Holley Sniper forum that with a 180 degree thermostat to have fan #1 come on at 185 and off at 180 and fan #2 on at 190 and off at 185. Then another recommended fan #1 on at 190 and off at 185 and fan #2 on at 195 and off at 190, these seem a little high. A guy that installs the Snipers on Pontiacs for a living recommended fan #1 on at 170 off at 160 and fan #2 on at 185 and off at 175. With this one fan #1 would be on while driving down the highway without the A/C even being on.

So I am wondering what the Pontiac guys have found to work with their cars and what you would recommend?

Thanks,
Dale