04-08 Horse power?
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Join Date: Jan 1997
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A lot of what you're feeling is the way the tuning is. Not more WOT hp on the dyno, but a pedal that is "lighter" in feel. The same can be accomplished (plus horsepower/torque) with a custom tune. This isn't good for mileage and its part of the reason Ford decreased weight at the same time they changed driver demand (pedal position) to actual throttle plate position. The throttle plate still doesn't follow the driver demand like a physical linkage would but they made it somewhat closer, plus the "slope" is changed. By that I mean that X% of pedal push translates into Y% driver demand seen by the computer was changed.
Imagine a traditional throttle with a linkage. You push the pedal X inches and the throttle plate travels Y fractions of an inch. Now, change the length of the arm on the throttle (leveraged distance) by shortening the end where the pedal is or lengthening the end where the throttle wire connects and X inches of the pedal creates more Y fractions of an inch on the throttle plate. Makes it feel peppier but it hasn't gained any horsepower. That, and more, to a much finer degree, is what can be done now in software with pedal slopes and driver demand.
Imagine a traditional throttle with a linkage. You push the pedal X inches and the throttle plate travels Y fractions of an inch. Now, change the length of the arm on the throttle (leveraged distance) by shortening the end where the pedal is or lengthening the end where the throttle wire connects and X inches of the pedal creates more Y fractions of an inch on the throttle plate. Makes it feel peppier but it hasn't gained any horsepower. That, and more, to a much finer degree, is what can be done now in software with pedal slopes and driver demand.
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