Quote Originally Posted by dvtek4sir View Post
On a stock car, it's designed to be a high pressure zone for air flow. With a modified car, it's optimal to have a high pressure zone in front of the radiator and low pressure zone behind it, that way the air can escape the low pressure zone (hood/fenders) creating better airflow and cooler temps. Since our cars are modified (front lips, lowered, etc) the hood risers usually create the low pressure zone behind the radiator.
I guess if theres a purpose. thanks for explaining it.