View Single Post
Old 01-08-2012, 08:10 PM   #4 (permalink)
drmiller100
Master EcoModder
 
Join Date: Dec 2011
Location: Boise Idaho
Posts: 842
Thanks: 39
Thanked 89 Times in 69 Posts
a pcv system puts a partial vacuum to the crankcase.

partial vacuum to the crankcase can increase efficiency of the engine.

your catchcan might actually be hurting mileage.
  Reply With Quote