Throttle reset will only require ONE or OTHER, both will simply waste your time.

What is schieved with a "reset" is to reset the amount of throttle applied to the engine when added by the pedal...
After a month or so, the car learns how you drive and will dampen the pedal response near the tick-over end of the pedal movement...ie 30% of pedal movement may result in 5% throttle applied...

The reset brings the pedal and Butterfly ratios in sinc with each other and gives a crisp response...
if you have a manual transmission like mine, it is soooo much better after a reset, as it enables a double-de-clutching action to be faster and throttling action crisp and more accurate...

hope this is helpful.

Regards
Grant B