^^ As he said. Get rid of that alu sheeting and mount with more "suction" (no gaps) to the Rad. A shroud would be best if you dont want to mark the radiator. (Just a note mate, drifting damages cars if you like it or not

Just some basics, but Have you checked that the fan is actually turning on?
What are you using to control the fan? (ie; ECU, thermostat sensor/probe adjuster, etc) What temp does it come on at?
Do you have an oil cooler?


2 10" fans would be better than the 12" in my opinion....

The car is obviously producing more heat when racing, so it will be hotter. I am not sure how the stock gauge is calibrated, ie; what the actual temp is when is rises. A temp gauge would really help....