Code P0171, High fuel trims across all engine speeds, poor acceleration?

Thats fine, I was delayed as well, so whenever you get around to it, I'll be here. No worries.

I know you cleaned the MAF, but I want you to unplug it though and see if the fuel trims come back towards normal running on a default strategy for the MAF sensor. Just make sure you shut the engine down first, then unplug the MAF and restart it, try at idle and then raising the rpm up, give the ECM a chance to try to relearn, I would even try resetting the adaptive and see what it does with the MAF unplugged, the reason is the calculated load % is determined by the MAF sensor, and at every rpm the calculated load is almost nothing, 15-16%, thats incorrect. So the ECM should default to a specific value with the MAF unplugged, If you see that calculated load change, it should go up, along with the injector pulse width change, we might be dealing with a skewed MAF.

I would still see if theres a default strategy when the MAFs unplugged, using the 2500rpm and 10.62g/s data, the calculated load should be at least 24%. A skewed MAF doesnt always show up even if its reading a reasonable grams per second. Clear the code, unplug the sensor and see if it will run and adjust its fuel trim numbers. Its an easy check to do,
These are your data PIDs for that rpm, so if the MAF is under reporting air flow the other sensors that are functioning correctly are going to compensate for the actual air flow coming into the engine. Which might be why your AF and rear 02 are reading so lean, 64% total fuel trim is an extremely crazy high number. If theres no change in your data PIDs with the MAF unplugged, move on to fuel.

Okay. I havent gone anywhere, just post your findings later on. Id like to know the fix on this one.