In the early 1980s, teams like Renault, Ferrari and Brabham were using 1.5-litre turbocharged engines in favour of the 3.0-litre naturally aspirated engines that had been standard since 1966. Having seen in 1982 the need for a turbo engine of their own, Dennis had convinced Williams backer Techniques d'Avant Garde (TAG) to fund Porsche-built, TAG-branded turbo engines made to Barnard's specifications; TAG's founder Mansour Ojjeh would later become a McLaren shareholder. In the meantime, they continued with Cosworth engines as old rival Lauda came out of retirement in 1982 to drive alongside Watson in that year's 1B development of the MP4. They each won two races, Watson notably from 17th place on the grid in Detroit, and at one stage of the season McLaren were second in the constructors' championship. As part of a dispute with FISA, they boycotted the San Marino Grand Prix. Although was not so fruitful, Watson did win again in the United States, this time from 22nd on the grid at Long Beach.