3uz stumble on heavy throttle

[BreakLaw Speed Shop]

So my 3uz will rev cleanly if the throttle pedal it pushed gently, but if you give it a good push the engine stumbles and misses and won’t rev. It starts easily hot or cold. Plugged my diagnostics in and the only codes showing are for air suspension (removed) and one for air con pressure. I had hoped something else would show! I am thinking plugs or fuel filter, maybe fuel pump? What else should I be looking at? It’s a 2001 with 130k miles. Thanks

 

[George_R]

maf, fuel pressure, or mercury in retrograde

 

[BreakLaw Speed Shop]

maf, fuel pressure, or mercury in retrograde

Had a chance to look today, maf sensor faulty