alohaspirit -
Thanks for this thread. I think my "reverse mudflap" configuration has been in error all this time. Based on all this info I think I need to adjust my "straight down" horizontal mudflaps to look more like the OEM ones on production cars :
What you don't see in this front view is that they are straight down. I think I also need to either angle them a bit and/or create a sloped frontal edge to help the air transition better.
CarloSW2