Are you 100% certain you got all the air purged from the high pressure oil system?
Are your batteries strong and topped-off?
Does your tach move slightly when cranking?
I would unplug the ICP and try to start again. It's a remote chance, but perhaps your new ICP is defective.
I would measure voltage at fuse 22 under the hood, and at the IPR harness - both with key on. Sorry, I don't know what the voltage at the IPR should read, but 22 should be battery voltage.
One of the two wires to the IPR will be a ground (obviously) - try to determine which. If you'll take that ground wire directly to the battery ground, you'll be applying maximum IPR pressure to the injectors. I would try to start it, and I would give it a small shot of ether.