Unless you've changed sensors the ref is magnetic, the sync is hall, mode 17, see this for more-
viewtopic.php?f=11&t=1549&p=9428Ref rising or falling depends on how the sensor was wired, either will work, look at the edge as its going thru the missing teeth, rising or falling.
Do a ref/sync capture (no ign or inj connected)then determine the proper edges.
You want to use the sync edge that is closest to the center of the two missing tooth events on the ref.
Oh and make sure the sensor matches the type of trigger wheel used, the round tooth stamped wheel needs the rectangular pole sensor, the square tooth wheel can use the round pole sensor. Learned this lesson the hard way, there are lots of options for sensors in this engine family.
This one ended up ref fall, sync rise, 438 crip.