One of my rear o2s misbehaves on the scope. It cycles between lean and rich, this is why I want to replace it. Thought I might nip this issue in the bud, rather that replace the sensors one every 10k. I can get universals for $52 each.
As for the Cleaning. How competent do I need to be to clean my TB, LIM and UIM? I understand what I need to do, but will I need new gaskets if I leave the LIM on? Most important. Is this nessasary at 70km.
D.