[thstone]

Just press the accelerator more. Same result.

There is no change in true throttle response as the engine and ECU remain unchanged. All this does is remap the amount of throttle as a function of pedal distance. In doing so, it can give the perception of more throttle response but you can do the same on your own by simply being more of a lead foot.

Many new cars come tuned this way from the factory with a fairly high gain throttle at initial tip in of the accelerator. This gives the impression that the car is very powerful since you feel so.much power for just a small amount of pedal movement. The problem is that this gain can't be sustained through the full distance of the pedal. If you tried to do so, you will reach full throttle at 80% pedal throw and nothing would happen from 80 to 100% of pedal distance.

So, what happens is that the gain is lowered through the middle of the pedal throw so the end point remains the same (WOT = pedal on floor). This results in what feels like a gutless mid-range, i.e., large pedal movement results in smaller than expected throttle opening which feels like the engine has poor midrange power.

In the world of tradeoffs, the average driver remembers the initial perception of power much more so than the lack of midrange power so this is how many cars are delivered. Test it your self. Go drive a low powered car and it will feel decent off the line and gutless in the midrange. It was programmed this way.