Electric fan controler temp settings

Um, generally one does not want the fan controller to have the fan come on below the t-stat rating. Once the car is up to temp, the fan would never really shut off.

If running a 195/197 stat (193 is new to me), I guess I would have the low speed come on at ~210 and off at 202-ish. Have high speed come on at 220 or so.

This is where a 180 stat would really help with setting the fan up so you dont need to get so hot. A mech fan is always working, so you dont need that bufferzone with the fan temps vs the stat rating.

If it helps just for comparison, the 94-95 low speed fan comes on at 208*F, off at 200*F. High speed doesnt come on till 226. Now this is stupid, but gives an idea of a stock threshold (where emissions was a concern more than what is best for the motor).

A 180 stat would allow low speed to be ~195/187 (on/off, respectively) and you could set high speed whereever you want above that (on at 205-208, etc).

I have not used either of those products, so take this as my crude, general two cents.

Good luck.

if you set it too low the fan will come on sittin in the sun in the summer

I saw a 193 once also... I have a 195 in mine lol. Have your fan turn on at 210 and off at 195. If you change thermostate, just change the SPAL settings again. I'm hoping to install a 185 in mine and set the fan to turn on at 205 and off at 185 or something like that.