Hi, have you considered checking out the PCV system? I think that's it's possible for the PCV (Positive Crankcase Ventilation)filter to clog up after time, especially if there is any kind of bypass of oil into the system. 117k isn't much mileage nowadays but it's still very possible, and if the PCV is OEM(original equipment)it really wouldn't hurt to change it anyway. You mentioned that the car would function fine when driving in the city, but bogged down when you "gave it the gas", try to steadily bring up your speed, maybe 40-45 mph,then gas it until it downshifts into the passing gear again. Check your fuel pressure too. You can hook it up to the schrader valve on the fuel rail, and the pressure tester is inexpensive tool from auto zone. Your pump might be OK for normal driving but not providing enough pressure when you need it. Of course the sucky part of all these new cars is all of the damned sensors. Good luck!!
JIM
