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I dont think we are talking about the same thing. You are talking about changing the value for the TPS that the computer sees, while not changing the actual position of the throttle plate eg: you open the plate to 50%, the computer only sees 45%. What I am talking about is actually changing the position of the throttle plate in relation to the throttle pedal. An electronically controlled throttle plate(drive-by-wire not cable) has 2 sensors on the throttle pedal that have an opposite sweep of each other (one sensor goes 0-5v, the other reads 5-0V) to determine how far you are asking to open the throttle. the computer then tells the throttle plate actuator how far to open. What I was talking about is a device that changes the rate of pedal movement, eg: on the stock car 1in of pedal travel may equal 25% change in throttle position. After the device is installed you can make 1in equal 10% or 50% change. For the racer crowd, this quickens throttle response. For the conservation crowd, this is like installing a hand lever for the throttle. You can be more precise with throttle inputs while still using a clumsy foot.
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