Toyota Repair: 97 corolla, air intake hose, amsoil motor oil

Question
New plugs wires cap roto button pcv air filter fuel filter air filter. Rated 27 city 34 highway. 61 k original miles. Car has amsoil motor oil syn. Top engine cleaner, injector cleaner put in the tank. Best mileage any where you drive it 26 mpg. Could mass air flow sesor cause this? Sometimes it feels like as you let up on gas pedal it actually picks up speed.HELP THANKS.

Answer
A MAF malfunction would turn the check engine light on, I don't think that's the problem, I would suggest removing the air intake hose from the throttle body and then cleaning the inside of the throttle body with a brush and some spray intake cleaner to remove all the carbon that's in there.