Choked Acceleration

[lino]

I find that my car winds up from take off and then spits the power out at something like 4000 rpm and up (I'll have to confirm the exact rpm). I feel like the car is choked. I hear the engine working hard and it sounds powerful, yet no take off. I'm wondering if I have a clogged catalytic converter.

[Q45tech]

Maximum acceleration [in G's] occurs at the torque peak rpm ~~4,000 rpm and declines as the HP [RPM] increases.Roughly down by 18% at 6,000 rpm and 25-30% at 6,900 rpm.

Physics!

[Jesda]

Which vehicle? What year?

[maxnix]

Please read all previous posts by Q45tech. You will learn a lot more by reading the original discussions of gearing and VH45DE torque curves.