Originally Posted by kenny's 370z

its funny that when i turned my radiator fans on 100% via toggle switch from a cold start at lunch today in 81 ambient,i didnt have any problems whatsoever.so obviously,the cooling is the problem.i shouldnt have to upgrade to a bigger radiator for the car to operate normal with just shifting at 5k.even then,when the ambient temps get back into the 100's,this car STILL wont have proper cooling.i love the power but hate the bogging and delay.