no it helps level the voltage in the rx. incase of a low power moment the cap stores electricity and uses it on surges.

A BEC that castle makes dose the same thing powers the rx directly off the battery and then inturn dose give a servo more power.

but you have to cut the red wire to run on from your esc witch eleminates the bec from the esc (HUGE problem on the MMP is the WEAK bec witch inturn causes a Glitching like problem)