Has anyone here who has a Manifold Absolute Pressure sensor replaced it as a maintenance item? I read on another forum that MAP sensors get carboned up and dirty and need replacing about every 60K. Mine has 111K on it and the signal wire reads 1.2 volts at idle, which is at the very low end of acceptable specs. My check engine light is not on. I read on the other board that a new MAP sensor will improve MPG and power and make the truck run like it did when it was new. Any info is appreciated.