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When I did some maintainance on my car, I noticed a point where drag could be reduced:
The cooling system.
My car doesn't have a ducted radiator, wich implies I have more cooling drag than I need to.
As it is mid engined, I have the space in the front to add some ducting and the front bumper does have a nice shape to implement a grille block or intake duct.
Idealy I could take some inspirations from the Porsche 911 (996) and use the cooling air as air curtains around the front wheels.
But I will have to look a bit more closely at how I can route the airflow from the radiator.
I've taken a look at the CDA in the wiki:
Even though my cars CD is not that good at 0.31 (softtop), the CDA of 5.68 (soft top) is not that bad.
A gen 1 Insight has a CDA 5.00, to match it I only need to go from a CD 0.31 to down to 0.273.
I haven't done any measurements yet, but the hardtop alone certainly makes a difference and so does my VG mod.
With a flat undertray, ducted radiator and a fastback, I think I could beat an Insights CDA.
After all, I only need a 12% drag reduction to do so and that's based on a softtop.
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