tune-up

(noun) exercising in preparation for strenuous activity. Synonyms: warm-up, prolusion.

(noun) adjustments made to an engine to improve its performance.

(verb) adjust for (better) functioning. Synonyms: tune, tune up. Example: "Tune the engine."

(verb) adjust the pitches of (musical instruments). Synonyms: tune, tune up. Example: "My piano needs to be tuned."