Mechanical throttle cables can get loose overtime on cars. In this video I'll tighten the throttle cable on my 1999 Acura Integra. It's a very quick, easy adjustment, and can remove dead band from your gas pedal, where you press the pedal but it has no influence on the throttle control. So long as the cable is not super loose, you should still be able to reach WOT, and thus this should not affect performance, but it's nice to have the gas pedal immediately respond.
Gas Pedal - http://youtu.be/smI2ijg4KcM
Throttle Position Sensor - http://youtu.be/4Dx5G_rrC3E