G37 won't rev or accelerate
 

Hi everyone,

I've recently bought a 127k mile G37 and it drove fine for around 1k miles. Recently, it started having this issue where it wasn't as responsive/quick and when moving from a stop, it would take a bit for the car to decide to go. Now, it will start just fine, but it won't rev in park and it will creep but it won't move when I give it throttle. So far, I've received codes for MAF sensors and O2 sensors which I have replaced (hasn't fixed anything). I also changed out spark plugs and I'm about to replace the throttle bodies (already tried cleaning them). Car has intakes and LTH. Does anyone know what might be causing this?

Thanks!