MAF Sensor And TPS
WARNING: This page is about a different car, the 2004 Hyundai Tiburon. However, it is still accessible from the selected car via links, so may be relevant.
MAF should increase when depressing the accelerator pedal and should decrease at the moment "THRTL POS SEN" is closed (accelerator pedal is released).
TPS should increase while depressing the accelerator pedal and should decrease while releasing it.