I have not driven the eco in the F150 but in the Ford Fusion I had for a couple months this summer, there was a large amount of turbo lag. In fact, it was enough that I was glad I was driving it in the summer. You'd take off from the light and it would be like a dog and then all of a sudden spool up. I was thinking heck if it did this in winter, you could get in trouble quick. Plenty of power and good mileage if you babied it but the lag and sudden spool up after that was surprising and not good if that is normal. How is it in the F150 for those that have driven it?
The 3.5 eco in the F150 had plenty of low torque off the line but then you'd hit some lag higher up. It always felt like the transmission was searching for higher gears and you'd have to wait for it to come back down.