I have a 2002 Jimmy SLS that will start and idle perfectly but bogs down and there is a growling noise coming from the air box every time the throttle is snapped or at around 2500 RPM when easing the pedal down. Almost sounds like it's starving for air. Recently scanned and had a P0101 indicating MAF was out of range. I have just changed the plugs, wires, cap, rotor, MAF, HO2s, fuel pump, fuel filter, air filter and cat. I have no idea what to do or where to look next. DTC came back after switching out the MAF. Checked TP sensor voltage was A-OK. Anybody with ideas?????? Thanks in advance!