Seger & Hoffmann kept the intellectual property of the cars and, together with Brun, upgraded the design and built a new C83 version with a 2.7-litre turbo Porsche engine. Brun entered the polyglot threesome for Le Mans but he wrote off the BMW-powered Sehcar in a big accident that broke his arm at the Nürburgring round.
Seger & Hoffmann retained ownership of the car's intellectual property, and in collaboration with Brun, they refined the design and constructed a new C83 model equipped with a 2.7-liter turbocharged Porsche engine. Brun joined the multilingual trio competing at Le Mans but suffered a severe accident while driving the BMW-powered Sehcar at the Nürburgring circuit, resulting in a broken arm.