Originally posted by Klaus
The coolest spot is the best. Experience so far has shown that right before the cat is typically the coolest.
Would you explain both of those statements please Klaus.
Both the NTK and Bosch sensors use internal heaters to get to 900 degrees C, right? I would think that you'd want a spot in the exhaust stream that won't go over 900C at it's hottest, but I can't see the reason for choosing the coolest spot. Seems like that would be further downstream that necessary.