Learn Me: Ford 1.6L EcoBoost Issues

So, I heard back from the owner of the Escape yesterday- they said it was running great, but it had a P0299 code pop up (Turbo/Supercharger Underboost). I had that code pop up back when it was having trouble with the timing and needed the Misfire detection reset but assumed it was related to the other issues. I'm going to have them bring the Escape by later this week so I can double-check that all of the intake tubing is properly tightened up and not leaking, and perhaps see if I can figure out the logging in FORSCAN to take it out and see what is happening that is causing the code to pop up. I know that the exhaust manifold nuts weren't tightened properly when I got the car (several weren't even finger-tight) so I'm surprised that after tightening everything to spec that it's complaining about not enough boost. 

That code is familiar.  I don't have the same access to SI that I used to, but if memory serves right, the boost control solenoid can fail/wastegate hoses can fall off and when this does you get underboost.

In reply to Pete. (l33t FS) :

Thanks- I'll focus on checking the solenoid & its hoses in addition to making sure that none of the pressurized hoses are leaking/loose (I had to take off and install the intercooler-to-throttle body one at least 10 times so wouldn't be wholly surprised if there was an issue with it despite double-checking that everything was tight the last time).