Since basically they use the same motor as the SHO, has anyone experienced this issue.
This is incorrect. the F-150's EcoBoost is actually vastly different than the FWD/AWD based applications, built for more durability and torque for a truck. It has a unique valvetrain, crank, exhaust manifolds, turbos, intake, etc.
With this issue though, it basically comes down to the intercooler design (which is also unique for the trucks vs the cars). I had the same issue in my '08 F-350 turbo diesel. Basically when it's cool and humid, the turbo(s) compress the air so much, that when it is additionally cooled in the intercooler, it turns the humidity back into liquid water and collects in the bottom of the I/C. This isn't a problem when cruising and a relatively low volume of air is going through the I/C, but when you step on it, it creates a large vacuum and sucks up the water into the intake air charge, causing the motor to momentarily choke.
There was a TSB for my F-350 about it and they supposedly put on a "revised" I/C, but it looked identical to me and I still had this issue from time to time when it was 40-50F and >80% humidity out. The TSB also mentioned that the issue could reoccur with the new I/C, but that it was "normal" and "wouldn't cause any engine damage." Yea...ok
Now the F-150 might be having a different issue, but it sounds like the same symptoms and conditions as with the Powerstroke, leading me to believe it's the same issue.
