Thread: Cold start
View Single Post
      12-12-2012, 11:33 AM   #9
Beemw335
Colonel
29
Rep
2,020
Posts

Drives: 335i
Join Date: Mar 2011
Location: My car is my home

iTrader: (2)

Cold starts heat up the cats so they can operate normally right away.
Wether they heat up in 2 minutes vs 5 minutes wont damage them, it'll just make your car polute more per say, since the cats aren't operating at their full potential.