View Single Post
Old 12-04-2008, 03:49 PM   #34 (permalink)
EcoModding Apprentice
Join Date: May 2008
Location: Fontana, CA
Posts: 167

Red Egg - '95 Ford Aspire
90 day: 38.51 mpg (US)

Dodge SRT-4 - '04 Dodge Neon SRT-4 2.4L Turbo
90 day: 26.24 mpg (US)
Thanks: 1
Thanked 0 Times in 0 Posts
I added the diffuser first to the back of my car and didn't notice any smoothness change. The car did get quieter because of all the road noise in the hatchback i drive. The other aero threads state that sealing up the underside of the engine (front of car) is more important than the rear. Most rear bumpers are total parachutes so they do contribute to hurting aerodynamics, but you'll see more results with the front attack. Start with cardboard or coroplast as a stepping stone/template, to map out underside mounting points of your more high dollar materials. My 3 color aspire only deserves coroplast
  Reply With Quote