Table schema:
CREATE TABLE table_name_7 (max_torque_at_rpm VARCHAR, engine_code_s_ VARCHAR)

Question: What is the maximum torque at rpm for the engine coded BJB/BKC/BXE/BLS?
SQL: SELECT max_torque_at_rpm FROM table_name_7 WHERE engine_code_s_ = "bjb/bkc/bxe/bls"