Help! 190E, 2.6, '89 acceleration problem

Car information: 190E, 2.6, six cylinders, '1989

Problem:
If the car is cold, i.e. the first 5 minutes of operation, when I push the acceleration pedal, e.g. around a corner, the car wants to die. In the past, it did die couple time. I have replaced the distributer cap, rotor, spark plugs, fuel filter, air filter. I also used fuel injection gas additives to clean the injectors, diaphragm, etc. I didn't notice much difference. The valve cover gasket was leaking minutely, I replaced it as well. After all those repairs, the car does not die anymore but the problem still exists.

I appreciate your help and expertise very much! Please write to my email at: ewahbah@yahoo.com
Sam