i found this picture to be quite inspirational.
not only is this one of the best oem undertrays on a production car i've seen, but also it's got a number of interesing features.
the riblets on the undertray seem intentional and likely are for aero rather than structural, as they're not used anywhere else.
but also the angled wheeldams behind the bumper is quite interesing.
because i love the concept of dams but never seem to get them right i thought i'd give this configuration a try
i'd previously enlarged the side dams on my car but this didn't produce the desired effect, so i radically trimmed them down... and added mercedes inspired angled dams
on my first testdrive i didn't get the feeling they added drag so that's a good thing, but cornering definately felt different... i'f i'm honest i'd say the car seemed to have a bit more body roll, but i'm still evaluating so we'll see
here's some pics
