Thanx for all the replies fellas. This issue started like 2 or 3 years ago. I can't say exactly when things went bad because i wasn't really paying attention to gas mileage. I just happened to notice it one day. So, as of now she has 144,419 miles on her. I bought her in 2010 with 118,000+ for $3k.... My temp is 210. Changed the T-stat about 2 years ago with the fan clutch. I've cleaned the TB about 3 times in the last 3 years. I dont have ANY power off the line. Never have. I believe its a power management thing with this model though. Even with the pcm4less tune it didnt show much improvement. But she does much better when your already in motion. There is a delayed response though when you mash the gas. She revs hard then catches. Like she had to think about the question before she answers...lol. I've gone thru about 3 coil packs so far, and have changed the plugs about 3 times. About to change them again next week. She does get better hwy mileage. Around 275. But thats still ridiculous. There is no smoke issue and i changed the cat sensor and the right side O2 sensor. It improved a TAD bit with the right side sensor cause i was getting something like 140mpg at one time! There are no apparant fuel leaks. Although i have not had the tank dropped to check above it. I also changed the fuel filter. Here is another thing. I went away for 3 weeks, came back, then saw that fuel gauge read about 7/8's, when i could SWEAR i filled it up before i left. But honestly i'm not sure. But i figured i'd give you all the details i have. I asked the mechanic to check my fuel injectors and he said they're fine. But i really don't think he checked. Also, the other day there was a random knocking in the engine. Kind of like if you threw a rock in a dryer. But after a restart or 2 it went away and hasnt yet returned. Well, thats all i have for now. I hope it helps...
Oh. I also changed the power steering pump, the water pump, and the tensioner...