View Single Post
Old 10-10-2008, 08:33 PM   #26 (permalink)
some_other_dave
Master EcoModder
 
Join Date: Jul 2008
Location: Silly-Con Valley
Posts: 1,479
Thanks: 201
Thanked 262 Times in 199 Posts
Depends on a lot of factors, though. A friend of mine put headers on his 65 Mustang, and gained some fuel economy. (It went from "unbelievably hideous" to merely "awful". )

Any potential gains are probably a lot smaller for more modern cars, though. I'm guessing much or most of the FE benefit for him was the stock system having a pretty poor design.

-soD
  Reply With Quote