Conventional Tach on LS2

[Critter]

UPDATE from my end. I have since run into a few GenIII pcms that need the resitor, so far here is the general pattern I have seen.

DBC computers pull up just fine and do not need a resitor

DBW computer need the risistor EVEN THOUGH EFI LIVE GIVES YOU THE "PULLUP" OPTION IN THE TUNE SOFTWARE.

I am assuming this carries over into the GenIV ecms beings they are all DBW. At the time I first posted my comments I had done a few dozen harnesses but all but 2 were DBC. The couple of DBW I had done for whatever reason the guys never got around to hooking up a tach. I had set them all to pull up the tach signal assuming they worked like all the other genIII ecms I had done/tested. I have since discovered the errors of my ways.

I apologize to anyone I might have misled with my previous comments.