P0171 code has been coming up for the past 6-8 weeks. I can't find any vacuum leaks, exhaust leaks are a maybe but I don't hear any. Since it took me 3-4 attempts to get that TOG cross-pipe to seal it would be really annoying to have to take it out again. What could cause this to happen besides an exhaust or vacuum leak? Especially after so many drive cycles.
My work commute right now is about an hour 70 miles each way. Highway driving 60-90 depending on the traffic and spirited driving most of the time. Weather is about 80-120 degrees since the beginning of June.