 In 1981, the FIA instituted a drivers championship.In 1982, the FIA attempted to counter a worrying climb in engine output of the Group 5 Special Production Cars by introducing Group C, a new category for closed sports-prototypes (purpose built racing cars) that limited fuel consumption (the theory being that by limiting fuel consumption, engine regulations could be more relaxed).While this change was unwelcome amongst some of the private teams, manufacturer support for the new regulations was immense.