sorry for the delay in response.
So Ford covered the new engine, really with no questions asked, which kinda surprised me. i think it was because i had saved all my records and had been at the dealer a lot recently due to other issues. they also replaced the torque converter, again i think because i had a previous issue with a squeak coming from what sounded like one of my wheels and the dealer thought it was a transmission issue with the AWD but hadn't got around to finalizing the diagnosis.
they are not entirely finished with the car, i will have to bring it in again soon. they still need to fix the auto park controller (previous issue). also, the car doesn't feel quite as strong as before (i'm talking w/o any tune) and the gas mileage is worse (15.5mpg). i also hear a whistle coming from the engine (assume its one of the turbos) during WOT in first and second gear.
i think the lack of speed is probably more due to the transmission than the engine (maybe) i really don't know, but its very slow to kick down making passing on the highway less than effortless the way it was before.
does anyone have an idea of which 3.5 they used? is it a gen 1 (2010-2012) or gen 2?
obviously i'm more wary to tune now, although i thoroughly believe its was a bad oil change that was the culprit, but i want to enjoy my car like i did before.
so we'll see...