The MP Motorsport drivers tussled over the lead, swapping places several times during the 18-lap sprint race, but Williams junior Colapinto had the upper hand.
Boya snatched the lead from poleman Colapinto off the line, but racing was quickly neutralised after Caio Collet, Paul Aron and Jonny Edgar collided further back.
Racing resumed on lap five, with third-place runner Gregoire Saucy (ART) closing on the pair before contact from Zak O’Sullivan (Prema) scuppered his chances.
Colapinto took the lead on lap 10 down to Turn 1, but Boya bounced back two laps later to reclaim the lead before he was again passed the following tour.
The Argentinian then built enough gap to hold off Boya before Bortoleto (Trident) swept into second at the Variante della Roggia, leaving Boya to take third.
Colapinto and Boya were promoted to the front row after all three Hitech cars were disqualified from yesterday’s qualifying session, relegating them to the back of the grid.
The Rodin Carlin cars of Francesco Simonazzi and Ido Cohen were also disqualified after all five drivers were found to be in breach of the FIA International Sporting Code after their tyres were changed whilst the cars were under parc ferme regulations.
Source: Autosport