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Ced67 For some reason, just looking at your pictures looks like you are using the ECUTek version of the Flex Fuel kit. IIRC the OFT version for DT Flexfuel doesn't have a pass through for the O2 Sensor. It should only has a wire that goes straight to the ECU for the evap connection and another wire for power but I could be wrong. But what you are doing is also correct in order to get the proper reading for OFT. Just remember to figure out the voltage as Steve99 said in the previous post.