About throttle response

[JetspeedCamry]

I've got an interesting issue with my throttle/accelerator.
The car will accelerate very well upon a very small amount of throttle, but when giving it more, itll accelerate more, but not in "proportion" ot the amount of throttle im giving. It makes low speed driving quite interesting because you try to just "touch" the accelerator to get going..and if a car is dawdling in front, you tend to accelerate too quick and have to clutch in.
I was thinking it might have something to do with injectors (leaking/dripping), as it ties in with another issure I have (but thats another story!).
Any ideas or advice? (sorry for the vague description..hard to explain!)

Thanks.

[BeRad]

try throwing some injector cleaner in the tank tends to help, changed the fuel filter etc lately?

[JetspeedCamry]

Yeah replaced the fuel filter recently.