Ok, I'm almost positive i found my IACV and yea i understand the deal with 2 only working with 2 wire and 3 only working with 3 wire now. I've read a few ecu wiring diagrams tonight and found some good info and raised one more question. So, the vtec ecu i'm going to be using uses a 2 wire IACV so i will need a manifold and 2 wire IACV from a manual y8, because my non-vtec is currently running a 3 wire. I think I've figured that out, but now the other thing i noticed is that the vtec ecu has a pin for a knock sensor. My current ecu and harness doesn't have that!? Is this going to cause problems? And what's a possible solution to that? Thanks for everything so far...