Thanks again, Steve.
When I first noticed the problem I thought I had purchased a lousey tank of gas. So I changed my fuel filter and realized that I had a fuel leak in the hoses around my two fuel pumps. So I also replaced all of my rear hoses. But I have yet to touch the two fuel pumps, which are both almost 3 years old (60,000 miles).
I've also noticed that I have been loosing pwr on the freeway when I attempt to accelerate throught 3,000 RPM. I'll have to test the car again on the fwy this week, now that I've adjusted lambda.
Lastly, I just changed my plugs, which were black, and I'm now running Techron to clean the injectors.