40 to 50C = 104 to 122 degrees farenheit -- for us good ol' USA guys.
I also have the Davtron/Andial gauge - mine is hooked up for inlet temp and post IC temp.
Cool down lap on the track takes only about 2 minutes to go from maximum (at times about 140+) to virtually ambient -
After sitting, it takes about the same amount of time when back on track - on the street probably double at about 4 minutes.
The faster the ground speed and higher the engine speed the better for my setup - it is a shrouded IC that does well with the fan pulling a majority of it's air through the IC. An under IC SPAL fan would really help with your concerns - IMO. Superb quality, huge selection - available on EBay and through Iowa Impot/Export here in the States.
3.4L, SC heads, 964 cams, B&B headers, K27 HF ZC turbo, Ruf IC. WUR & RPM switch, IA fuel head, Zork, G50/50 5 speed. 438 RWHP / 413 RWTQ -
"930 is the wild slut you sleep with who tries to kill you every time you "get it on" - Quote by Gabe
Movie: 930 on the dyno