Vishnu notched up a brilliant comeback from behind victory over Constantino Peroni to emerge a deserving winner.
Karthik Tharani's two place penalty for overtaking under the yellow flag proved to be his undoing as he slipped to the third position.
In Formula LGB4 class, Ajay Kini of Chennai edged out his nearest rival Krishanraj Mahadik (both of Team Dark Don Racing) by a gap of 0.270 seconds to establish himself as the firm-favourite for the title, while the talented Vishnu, racing with the Meco Racing, finished third.
The championship title in the JK Tyre-VW Vento Cup remains up for grabs as Sailesh Bolisetti led from start to finish, going notch up with an important victory to stay in contention. Championship leader Anindth Reddy Konda finished second while Karminder Singh finished third.