Um, if you take the MAF off it will pull a code and go into limp mode, also it will **** with emissions, which we all know how GA feels about them. Your car may not light the CEL, but if you check for codes you should find some, anyone know why Toyota made a hierarchy of codes, some flash the CEL, other illuminate it, while other just sit silently until you notice one day that your car is idling at 1400 RPM?