Do any of you use the IAT/CLT based ignition advance and retard?

I tried it out and currently have it set to retard 1deg every 10F above 85F and 75kPa.

My intake temps on a hot, muggy day in stop and go peak around 130-140F, with timing retarded up to 7 deg. My base timing map runs up to 30 deg absolute timing without the ign retard. I have a stock 1990 motor (muffler cut off, all else bone stock) and run 93 pump gas. Is this temperature based retard too agressive?

Also, does anyone know where to find the stock ECU's timing map for a 1990?

Cheers!