arcteryx
Supporting Vendor
There is an awesome thread over at dieselstop about the NAPA Echlin cam positioning sensor. This is one of the weak links for the 7.3. I swapped it out today and initial results are favorable. Time will tell, but many others appear to going with this CPS as well. It's a 10 minute job with a 10mm socket/wrench from the underside.
http://www.thedieselstop.com/forums/f47/7-3l-cps-search-effort-pay-off-463090
http://www.thedieselstop.com/forums/f47/7-3l-cps-search-effort-pay-off-463090