Try to test the fuel pressure and make sure it's up to spec. Just because the fuel pump is working doesn't necessarily mean it's working well. Plus your car may have a secondary fuel pump in the engine bay which if dead, won't help things.
You mean the injectors are not getting a signal? Well that's not good. Check your manual for how to test the injectors. Or try to pull one out, stick it in a jar and try to start, see if it sprays.
Sounds like it's something electrical/electronic. Check the airflow meter. There is a gimpy way to test it, but I find that the resistance test only works if it's REEEEALLLY fried. Best bet would be to try to get a different one and plug it in, see if it makes any difference.
Or your DME may be fried.