I'm a few days or a week late...didn't have funds to have my mechanic do this, so I dug into the engine. Had to replace both valve covers due to each had a small Crack and leaking oil. Valve cover gaskets needed replacing also. Others items I wanted addressed as well.
Went to O'Reilly's and got everything I needed and some other things ahead of the job.
Unhooked the battery and got to work. Removed the upper intake manifold. Found that gasket was bad. Removed the valve covers to see they were bad. After unhooking alot with that part, I was wiped out. Sat down for some easy stuff. Removed from the upper intake manifold the egr valve and saw it was bad.. dpfe..vacuum modulater was bad. Those were aftermarket that were put on in 2020. I dug thru my containers of parts and found all ford parts an egr valve, egr tube, dpfe, vacuum modulater. They were used junkyard parts. I inspected all 4 peices and cleaned them up. I called it a day, could not do anymore.
Came back next day to continue on, installed the replacement valve covers and gaskets. Installed all the used oem parts onto the plenum, began to put the rest of the engine back together. New egr valve gasket, new iac gasket, resealed the egr tube to the exhaust manifold. New plenum gasket also. All in all..the things I suspected turned out those needed to be addressed. Replacing the egr valve and tube, dpfe, vacuum modulater, some rubber vacuum hoses, all those new gaskets, all are felpro. That is what was used on this engine when it was redone in 2017.
What I learned from this is, I can still definitely do this. Now there are definitely limitations and restrictions, chronic pain, health issues slowed me down, I did it though. Where I'm currently living has a garage and it's really great...that way you can leave everything out.
Daylight, I started the engine to let the ecm relearn, and to inspect everything. The engine sounds crisp and clean. As I've been driving it the past week, it's really stronger than before. Using those oem parts and replacing the gaskets for certain things and those vacuum hoses really made it be alot better. I doubt the mechanic would have found those issues. It felt good to do this, and to be able to take it very slow.
With how the engine is now and the sound thru the flowmaster 44..I'm satisfied with the results.