View Single Post
Old 03-01-2009, 01:22 AM   #19 (permalink)
hummingbird
PaleMelanesian's Disciple
 
hummingbird's Avatar
 
Join Date: Dec 2008
Location: Noida, UP, India
Posts: 197

City - '04 Honda City iDSI EXi
90 day: 47.47 mpg (US)
Thanks: 3
Thanked 3 Times in 2 Posts
maybe a bit OT, but isn't a catalyst supposed to remain unchanged while helping chemical reactions? So technically the cat should not 'change' over time except for soot deposits if any, if at all... So what would 'age' the cat to require a replacement? Can't it be cleaned up and re-assembled in place, like could be done once upon a time?
  Reply With Quote