2006 f150

What is your question?

2006 ford f150 5.4 liter 3 valve. Brand new spark plugs, coil packs, oil change, and manifold gaskets. Codes for bank lean 1 and 2, and bad ecm. It smells like gas in the cab of the truck. If I turn on the heat with air circulation the smell goes away. So that tells me it's coming from the engine. I can't find any leaks and I did the spray test. I cleaned the maf sensor( i did the test, had truck running and unplugged maf sensor and truck stayed on) and throttle body and put in 2 different fuel cleaners at different times to see if that helped. It has trouble going uphill(foot to floor and drops down to 20mph on steep hills, rpms don't rise, seems to hesitate and shake more on hills), purge valve lines and evap lines are brittle and leave black residue on fingers, struggles switching to the next gear at 45mph( feels like death wobble), brake light flickers on and off, and struggles getting back up to speed after stopped. It has a rough idle but not too bad and runs fine through town.

How long has your 2006 Ford F-150 had this problem?