user: Question: What is the maximum torque at rpm for the engine coded BJB/BKC/BXE/BLS?
Columns: ['engine name', 'engine code(s)', 'valvetrain', 'displacement', 'max. power at rpm', 'max. torque at rpm']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Petrol engines', 'Petrol engines', 'Petrol engines', 'Petrol engines', 'Petrol engines', 'Petrol engines']
SQL:

assistant: SELECT "max. torque at rpm" FROM "Table" WHERE "engine code(s)" = 'BJB/BKC/BXE/BLS';