Latorre's teammate Jake Eidson finished third in the championship, ten points back from Enerson in a season where he scored two wins.
Afterburner Autosport's Victor Franzoni of Brazil captured the season opener but struggled thereafter, and ultimately fell to fifth in points.
The series' first trip to the Indianapolis Motor Speedway road course resulted in two drivers scoring their first and only wins of the season.
Cape Motorsports with Wayne Taylor Racing captured their third straight teams' championship, mainly in part, to the performances of Latorre and Eidson.
[4] The series will race at the Indianapolis Motor Speedway, Barber Motorsports Park, and Sonoma Raceway for the first time in its history.