Have you checked all of the wiring, connectors, etc from those two injectors back?
At first i was going to say maybe it could be the injectors but i think it would pretty far fetched for two injectors to go bad at the same time. The only thing i can think of is that somehow they are wired "together", such as having the same ground or power source inside the ecu and that connection/wire has alot of resistance somewhere (such as its grounded) creating that constant voltage.
It's hard to say for sure because usually an ecu is either working or not, but i've seen weirder things happen.
If you've checked the wiring all of the way back to the ecu then i'd go with the ecu as the culprit.
Where are you located? If you are close to me i'll let you swap computers with my car to see if it works out otherwise maybe you can find somebody in your area with a 94-95 cobra that will let you do that swap to see if it is the computer.
Otherwise the worse that can happen is you buy a computer, see if that's the problem and if not you can always sell it on ebay/stangnet/corral again.
Oh well, i hope that helps a little