Well i have the infamous P0171 CEL. Rough idle, crappy power, the usual. Checked every line i can think of, no leaks in sight. Cleaned my MAF, tried clearing the code and trying again. The plugs are only 10k old, same with fuel filter, brand new fuel pump. Only recent change was putting a 90 amp alternator on. So i guess im either missing something or its an injector or O2 sensor or....i have no idea.
Taking it to the shop tomorow to have it looked at. Just thought i would share the end of my day with all my Subaru friends that know these problems better than anyone