Do you have an adjustable height accelerator pedal? There were problems with people who adjusted their pedal down where they wanted it and it would hit the floor before it got to WOT
Climb under there and push the pedal all the way down, it shouldnt touch the floor, if it does its limiting your pedal travel. Could also be the pedal position sensor dying, they are pretty inexpensive and not too hard to replace.
Just confirmed that the pedal does in fact go all the way to the throttle stop - nothing is preventing it from the full travel, like my floor mat for example.
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