the car has always started fine, the problem is once it gets warm. it will often stall immediately after a warm start, and also when decellerating. recently it has begun losing power at low speeds before stalling.. the engine is still running with no responsiveness before it cuts out altogether. the other interesting development here is that now it is hard to restart her, where before she had always started right back up after a stall. you are correct though, i pulled the ovp and the cis-e unit separately and no change. i have had a hunch about the airflow sensor potentiometer or the airflow temp sensor. cap, rotor, plugs, have all been changed in the last 10,000 miles. i doubt it's the injectors themselves, it has something to do with idle at warm temperatures, which leads me to believe it is an airflow issue. back to the mechanic with her, i guess. i've had it up to here with the mb "specialist" i have been seeing, he doesn't seem to care. this was my fear when purchasing this car, a seemingly simple problem that becomes complicated and expensive..