[FX2.3]

Originally Posted by aerohead

An SAE paper I looked at this morning ( its old an from Fiat) had results from wind tunnel studies for scale models.Their take on airdams was that for a clean-bottomed vehicle an airdam could actually increase drag.For a dirty-bottomed vehicle they would probably help.Since the Ranger has a torture-chamber for an underside,my guess is that the airdam is for you.CAR and DRIVER's Pinto and Z-car projects both saw mpg improvements with airdams.They are an industry standard now for passenger cars. Corvette and Firebird Trans AM run very deep airdams,however,they are "bottom-breathers" with no grilles,and take in all their air from below the bumper.Try to get as much air around the Ranger as you can.

Thanks!