I have a 2015 f150 3.5 eco4wd with 120K on it. The last 1500 miles it has developed a funny noise on startup and on acceleration, it seems to have lost some power as well. I have owned the truck since new and always changed oil every 5-7k miles. I have towed with the truck a good bit but it hasn't been abused. The truck is tuned and has a 180 t-stat in it. I am not sure if it is an exhaust leak in the manifold or the cam phasers making the noise. The sound is coming from the drivers side. Here is a video of the noise. Any and all help is appreciated.