Idle/Driveability issue

[TCSpence]

Well I've done some work over the last few days. Heres where it is now:

Car will pop off and run for half a second, then dies. I cannot keep it running at all.

I have:
-checked crank/cam timing; its dead on
-replaced the intake mani gasket
-checked spark on all four plugs, they fire fine when its cranking
-tried a different set of injectors
-tried a different good ecu
-tried every position on the CAS, no effect

The ISC/FIAV is blocked off with cold weld. Kind of poor, but I was trying to eliminate them out of the equation on an extra throttle body. I'm going to try to track/make down a boost leak tester in the next few days.

Anything else I should be looking into?