guys i've countered my heat problem with lowering the body as much as i could! too the point it scraps the ground when running with very low foam tyres. it was a unexpecting find as i did this as an experiment as i witnessed all the other pro drivers at my club having their bodies very extremely low. now the window hole covers most of the bottom part of my engine as well now. and now im running 230-240F at the speed i use to run at 270...