98 Ram v10 02

From : partsmore

Q: surprised to find the harness for a 4 wire 02 setup on this truck - and only using 2. anyone experience adding the upstream ones and is there benefits other than losing $100 in sensors .

Replies:

From : tom lawrence

surprised to find the harness for a 4 wire 02 setup on this truck - and only using 2. thats there for the california emissions package which uses four o2 sensors it adds a pre-cat and post-cat to the existing two sensors in each downpipe. anyone experience adding the upstream ones and is there benefits other than losing $100 in sensors why would you want to do that first there are no further upstream sensors than the ones you have now - one for each bank of cylinders. second youd need to re-flash your pcm with the ca emissions program which will cost you some power. .