Quote:
Originally Posted by CigaR007
The way I see it, without extending the sides, vortices cannot be captured in an attempt to reduce the pressure differential and reduce turbulent flow. Cd reduction will be minimal and hindered if the sides are not tapered.
|
I would extend the sides. I’m saying the angle would be very minimal. Most of the low Cd cars out there just have a long roofline and the width in the rear isn’t as narrow as how most ecomodders do their after market boat tails. I understand it’s not as optimal, but in theory a proper boat tail would give me an average of 10 extra mpg, but I’m willing to add some styling personality and say, get only 8 mpg