View Single Post
      05-06-2013, 12:18 PM   #57
Private First Class
epbb's Avatar

Drives: 2010 M3
Join Date: Mar 2013
Location: SW FL

iTrader: (5)

Originally Posted by PINHEAD View Post
just to clarify...euro spec meaning there is only 2 holes for the pre-cat o2 sensor instead of the required 4, meaning you are the 2 post cat sensors that should be plugged in but because its "euro spec", its removed because it has nowhere to be plugged into, not ideal for US cars.
Just so I can learn, how is this not ideal for US cars? Are you saying that because US cars typically have four pre-cat o2 sensors (Two before the primary cat, and two below the secondary cat), and since this one only has two, you would have two pre-cat o2 sensors just laying around?

How would this affect the post-cat o2 sensors? Doesn't the US spec also have four post-cat o2 sensors?