Hello everyone. I just received my new EHA valve today and installed it on my 300E. The first thing noticed was the car started up faster but idled a little rougher. I figured the computer needed to get use to it so I did not worry. I moved the car about 1000ft turned it off. Went back to it about 30 min later and turned the key...again it started a little better and stronger than it did before on first crank. I drove it around for about 5 miles and it definitley evened out on idle. It did struggle on acceleration from stop and when cruising around to pedal down. When I got back home, I took out my trusty new Sears Multi Meter with Duty cycle ($29.99) and hooked it up. It was definitely off. I adjusted the duty cycle per the link provided in this forum (richer...1/8th turns) and got it within the 50% range. Took it out and acceleration was back on track. It was 100 degrees plus out here today so I was very happy with first key turn hot starts. Will have to see what happens in the morning after cool down. Before, hot starts were not consistent even at cooler temps.