Hello! Yeah I am trying more and more and hopefully there is a possibility of improvement through longer trips throug hotter air
SCd I mean the product of frontal area and Cw factor. For instance, on my car the front area is 2.2m2 and Cd is 0.27. Which gives a result of 0.593m2. I got through coastdown testing a value of 0.606, which is 2% of official value so I am happy with my protocol. And coastdown testing told me that folded passenger mirror made my SCd down by 0.02m2.
When I receive my new grille block I will do a new coastdown testing to try and see the actual difference.