Reducing the intake air temperature increases horsepower and the Racing Cooler can reduce your intake manifold temperature by as much as 15 to 20-degrees. The specially designed fire retardant bag holds sealed gel pouches that can be frozen to quickly remove heat from your intake manifold between rounds and helps maintain a cooler intake during quarter-mile passes. The cooler bag and sealed inserts eliminate the mess and worry of leaking plastic ice bags that can damage critical electronics.