Hello,i have an 06 jeep rubicon 4.0 mt .now that I have more or less figured out my mpg problem I have another issue( not as pressing but still). Went out and fired up my jeep to go to work and every thing was fine when the motor is cold and idle is higher but once the motor reaches operating temp and down it starts idling a bit rough. Now it's not kicking on the mil light nor is it wanting to die but it feel like there is a slight misfire or not getting enough fuel or something. I read in another forum that it could be an issues with heat and where the injectors set into the manifold. Anyone else have this problem.