[Philo]

Has it always been this way, or is it a change from the way it previously acted?
If you notice a good increase in power at 3K (and always at 3K) it may be the engine 'coming up on the cam'. It is normally the grind of the cam that causes it, and it is generally about half way through the RPM range for a street car. Of course computers can vary that quite a bit on newer engines, depending on how it is setup at the factory. My Colorado has it, although it is not as obvious as a more powerful engine. If I push the accelerator about half way down, and hold it there as the engine/truck is accelerating, all of a sudden about 3K, I notice a surge in power output that holds as long as it is above 3K.