i have a 2002 acura rsx type s and im having this problem where when i try to step on the gas hard it either stalling or goes up in rpms with a struggle and popping from the engine bay. when i drive it there is a lot of hesitation and i cant pass a certain rpms. when in neutral it sounds fine at high rpms as long as i get there by pressing the gas pedal lightly. i had four codes pop up 1. knock sensor 2. tps voltage 3. intake sensor 4. 02 sensor (bank 1 sensor 1) i changed all sensors and calibrated the tps sensor. nothing worked so i replaced my fuel pump, i changed spark plugs, injectors, coil packs. nothing worked so i thought maybe my cat was clogged because all the codes went away except for the o2 sensor code that wouldnt go away no matter how many times i replaced it. and nothing changed. i dont know what is wrong with it and i have talked to several mechanics two of which worked at acura.
milage - 190845
trans - manual
found a vacuum leak and i fixed it also
It isa good idea to check the back pressure (before the cat) to make sure you do not have clogged cat.
in the post i say i undid my cat all together because i thought maybe it was clogged