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I managed to get better flow atachment on the rear window of my car, reducing its aerodynamic drage to a noticeable degree.
I'm not quite happy with it yet as I still get some seperation, so further itterations will be required.
Next year I will probably try a few different itterations of different vortex generators and a seperation edge on the rear bumper/engine bay cover to further reduce aerodynamic drag and decrease rear end lift
Sadly my fuel economy at 160 km/h is still bad, as I noticed on a recent trip where I had to make up time because the battery was dead after not driving it for a while and jumpstarting it with an 18V powertool battery...
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