However, Opel Team Joest was in for a tough fight. Not only had Alfa Romeo not been sitting on their hands, Mercedes-Benz had finally found the time to build a proper Class 1 car. Although the C180 V6 DTM lacked four wheel drive and only produced 400 horsepower, it featured a 6-speed sequential transmission, F1-derived active suspension, an innovative active ballast system which counteracted the pitching and diving of the nose under acceleration and braking and an all-carbon bodyshell bringing weight down to 980 kg (2161 lbs).
The GSi's engine mapping had been carried out by Opel tuning specialists Irmscher. A model with the 82 PS (60 kW) 1.4 L multi point fuel injected engine, which was otherwise mechanically identical to the GSi, also became available as the Nova SRi in the United Kingdom. In January 1988, a turbocharged version of the Isuzu diesel engine was introduced, with power increased to 67 PS (49 kW).[8]
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