The past few weeks i have been getting the p0171 code and experiencing some significant power loss.
I have an 02 wrx wagon w/ short ram intake on it.
i started getting the code around when i changed to the short ram intake, at the same time i had some work done to my exhaust (new sensors and cat)
however the problem seems to be worse than before
I just replaced the fuel filter, and ran some injector cleaner threw...no help
I changed the pluggs
I have checked multiple times for a leak after the maf in the intake system, cant find anything.
Not sure where to go from here???
Possibly bad maf?? i have no way to check and i dont want to shell out 100+ for a new one
i was also thinking bad fuel pump because of the ocasional evap code?
anybody have any ideas or where to check next?