I have a 4th gen Prelude, it's lowered and has a wings west RS lip around front and sides. I'm planning on putting underbody panels on.
My question is this: the lip kit already redirects a good deal of air that would normally hit the tires, should I put a flat underbody on or should i try to continue that shape along the length of the car??
for example:
its hard to see, but the lip is lower in front of the wheels on both sides.
should i try to basically make a tunnel to keep wind away from the tires, or just put a flat piece of sheet metal over the entire bottom? also, do diffusers at the back help to minimize drag as well as create downforce? I'm not a ricer, trust me. i want to get 35+mpg out of my H-series... 26hwy doesn't cut it for me.
lastly, would my car's shape benefit from vortex generators or is it already low drag?
severedgein 
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