There's been a lot of debate here over the years. The real ram air cars, with the functioning scoops from the factory also had other engine upgrades, which is where the extra power really came from. You don't get any ram effect due to the location of the scoops which is in a low pressure area of the hood. You might see a little benefit bring in cool air to the carb instead of sucking in hot air from the engine compartment.
