The female competitor, who asked not to be named, was still in her practice run aboard her white Honda V-Tec.
After the initial sprint on her way back to the starting line, she miscalculated a turn and under-steered, putting her car straddling on the island.
Personnel of the ERUF, who quickly rushed to the scene, said she was not hurt but the left side of her car was dented and the rear bumper detached.
Race officials said the female racer was only in her practice run and was not driving at racing speed.
"It was just a pacing lap, which means not a racing speed. Drivers should always remember to slow down when approaching a corner. It's like driving in the street. We don't know what's going on in her mind," said race organizer Neil Labrador.
On the other hand, Speedtec reasserted its authority after a successful run last February as they dominated the street class.
Brian Tee bagged the title riding his Nissan while Tobby Cueva finished second in his Toyota Starlet.
The pro-class is still being contested as off presstime.