The Korean responded with a double in the fourth and fifth frames to draw level midway through the match. But the Taiwanese rolled another double strike in the sixth and seventh frames to lead by 13 pins.
Despite failing to pick up a spare in the ninth frame, Su marked her final frame to win the match and take the title. The champion ousted Chou Chia-Chen, 267-231 in the all-Taiwanese semi-final while Choi defeated Chi Yun-Fan, 232-215 in the other semi-final match.
Su beat another Korean, Kim Yu Hyeong, 225-203 in her opening round and compatriot, Chu Yu-Chieh, 215-208 in the second round to reach the semi.
Choi eliminated Chien Hsiu-Lan of Chinese Taipei, 251-222 in Round 1 and Wong Son Ian of Macau, 240-181 in Round 2 to advance to the semi-final. Both the champions were awarded US$500 and the ABF Tour trophy each by Tournament Director, Dr Danny Santos.
The first runners-up were awarded US$300 each while the second and third runners-up all took home US$150 each. The ABF Tour Chinese Taipei is the third and final leg of this year's tour.