The Daring Desperado is able to cycle through her grit with ease, recklessly using her more powerful abilities and refilling her pool by completing specific dares.

Daring Grit (Ex)
The daring desperado uses circumstance and foolhardy bravado even more than an average gunslinger, drawing on resources other than simple violence. She does not regain grit when making critical hits or killing blows with a firearm. The daring desperado gains a bonus dare at 1st, 10th and 20th level.
This modifies grit

Persistent Daring (Ex)
Beginning at 4th level, when the daring desperado completes a dare, the benefits of that dare persist for a number of rounds equal to her Wisdom modifier, though she does not regain grit unless she has 0 grit.
This replaces the daring desperado’s 4th level bonus feat

Daring Combatant (Ex)
Beginning at 12th level, the daring desperado gains the benefits of all of her dares while she has no grit remaining, instead of just one of them.
This replaces the daring desperado’s 12th level bonus feat

Master Desperado (Ex)
At 20th level, the daring desperado gains the benefits of his dares even when she has more than 0 grit, though she does not regain grit from her dares unless she has 0 grit.
This replaces the daring desperado’s 20th level bonus feat