Not content to simply take part, the Brazilian finished Saturdays first race at the Florianopolis circuit in third, from 11th on the grid. During Sundays second race he went one better, winning from sixth on the grid, ahead of former team mate - and seven-time world champion - Michael Schumacher.
"This was a fantastic event, maybe the most important kart event in the world," Massa exclaimed after the race. "I demonstrated myself to be competitive like before the accident and that makes me happy. I think that if there were still any doubts, today I gave the answer. In the end I had a fierce fight with Michael, who was slightly faster, but I made it."
After notching up a win in Saturdays opening round and finishing runner-up to Massa on Sunday, Schumacher took the overall honours with 42 points to the Brazilians 36.
The German, however, was more pleased with Massas excellent return to the track. "It was like in the old days, with Felipe and me on the highest places on the podium," he said. "I'm very happy and proud of him. It was a wonderful race and a beautiful day for all of us who took part."
Indycar driver Vitor Meira finished third in the standings on 26 points. Also in action were 2010 Williams driver Rubens Barrichello, Force Indias Vitantonio Liuzzi, former Williams driver Antonio Pizzonia, 2004 Indycar champion Tony Kanaan, ex-F1 driver Christian Fittipaldi and former Renault driver Nelson Piquet.
Massa is planning another kart outing next weekend at the annual Granja Viana 500 endurance event, which gets underway in Brazil on Friday.