View Single Post
Old 03-08-2013, 09:45 AM   #5 (permalink)
Aero Deshi
ChazInMT's Avatar
Join Date: Jan 2010
Location: Vero Beach, FL
Posts: 1,065

MagMetalCivic - '04 Honda Civic Sedan EX
Last 3: 34.25 mpg (US)
Thanks: 430
Thanked 668 Times in 357 Posts
It has been discussed many times in the forums that smooth is only a slight benefit on the front of the car. A recessed block will give you 95% of the benefit of a smooth one. Obsess away if you wish.

It has to do with the air stacking up and sort of forming its own shape. By diverting the air around or over your car, you are sending it on a less resistive path than going through your radiator and engine bay.
  Reply With Quote