I recently upgraded my fuel injectors from 36# to 42#, removed the EGR valve, recalibrated the MAS and had my chip re-programmed. Now the car will not run for more than a minute or two without dying. When it is running, it is very rough; when I step on the gas, the car bogs down even more before revving up. I was able to keep it running long enough to verify that the timing is set at 10 degrees and that the fuel pressure is about 38 psi with vacuum off. I have tried lowering the FP some but it didn't make a difference. I have brand new spark plug wires and triple checked that they are secure. I have searched for vacuum leaks but haven't found any. I pulled a couple of the spark plugs and they were both completely black. Any suggestions would be greatly appreciated? I am running out of ideas.