okay , ive been trying to solve this problem for a bit now, car bogs you can feel it, not misfiing, i can gun it and it seems sluggish, and at like 5500 rpm it just bogs feels like you're hitting a rev limiter, its not the cat , i just did straight pipe, and put in new fuel filter , since it wasnt either of those, what else could it be?

weak fuel pump, sensor? dizzy?

 

air filter might be plugged....i just changed mine...wow what a difference

 

could possibly be a o2 sensor. could even be plugs and plug wires.