This was my first modified base shape. I put a nascar type spoiler on the back, about 2" above the trunk level. I got lucky, and I'm sure there's more to be had through more analysis.
Cd 0.305 -22 counts
Fz 203 N -234 N !!
I saw a huge drop in drag AND lift. Not to spoil the surprise...this is the best result I've had in 8 tests.
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