Some interesting reading: http://www.yearone.com/enthusiast/restoarchives/winter99/18-21camaro.pdf Yes it was written for the Camaro but should apply to all cars especially to our Mavs considering the similar body lines. From the article we can deduce that the Grabber spoiler was probably not the best thing ford did for the handling of these cars. Gross front-end lift at hwy speeds are likely. besides, the front valence without the spoiler looks like it was developed for the front hull of a boat. lol Im leaving mine on and will likely build a splitter and under body tray to go with it.
I got mine from Mas Racing Products 2288 University Ave W Saint Paul, MN 55114 651-644-6811 As far as function, back in the olden days we put them on road race cars to prevent frontend lift at high speeds and reduce turbulance under the car. The side benifit on a street car was a little better MPG at freeway speeds.
I had a 71 Torino that got scary-light in the front end at 100+ mph ... you would have to crank a bunch more steering into it just to get it around a mild bend in the road. A front spoiler made a huge difference on that car. Frank, I think you have the right idea about it piling up air right there at the bumper, but then the next layer of air in front of that tends to get pushed up and over the car.
I believe the air would be more apt to routing around the side of the car rather than up and over the bumper.
I'm pretty sure the valance I had made sends quite a bit more air directly into my radiator. I think it would be cool to see a wind tunnel test too. Regardless of the outcome I would never take mine off.
Look at the video at the bottom of this page. What they show would most certainly apply to your car. http://www.techafx.com/backgrounder.php
I agree. I read the article and watched the video. I would have to believe it is a big help. Next time you come to town, how about you video taping my car in that same experiment!!! That's a pretty cheap wind tunnel!