Just changed out my CPS and MAP sensors on my 1998 7.3 van (1997 motor) and saw a big improvement in performance, less cackle, and motor noise. The CPS in my van was the gray recall replacement. I replaced the CPS with F4TZ-12K073-C (https://amzn.to/3eYT81s
). The MAP sensor in the van was F4TF-9S480-AA. I found a service bulletin TSB 94-23-15 from away back that said replace this with F4TZ9F479A (https://amzn.to/2YaewuV
) for lack of power towing or black smoke at altitude. After swapping out the MAP it’s reading on my ScanGuage dropped 2 bar and the motor is fueling more evenly.