even if you dont get the PNP sensor setup instead of running wires to the xfi you still can make use of the egr wires for analog aux1 and aux 2 by changing the two jumpers inside the casper adapter box
then just wire in your sensor plug ...the egr diagnostic wire and the egr signal wire (gray and brown) will run back to the xfi at aux 1 and aux 2 , blk is ground, if sensor requires 12v the pink/blk is 12v switched
oh , razor had a kit for logging alky that was PNP into the map you just need to run the signal which could be run to the egr gray or brown wire
and i dotn like to spend much on alky sensors they dont seem to last in methanol, ebay has some cheap 5v sensors with pigtail socket around 20bucks.