just a quick question, why is it bad to rev your car in neutral/out of gear? im not gonna lie, ive done it a handful of times, but its not like ill always throow it into neutral and rev at people. i did it i think once when i put my intake on, once to rev the engine for a friend and maybe another once or twice. what exactly does it do? im guessing its a long the lines of just stressing the engine?