The audi service publication outlining the changes in 1992 indicates that on the new S4 engine Motronic system the 15 second overboost condition allows the boost to go up to 2.15 Bar. The torque/HP graph indicates the torque output is 258 lb/ft and stays flat from around 2000-2800 RPM. The torque output begins to fall off after that 2800 RPM point. Scott M.