The Race Expansion Module (REM) is used in conjunction with the Haltech Elite 2500 ECU to offer extra Input and Output functionally as well as Advanced Torque Management. Using the REM with the Elite 2500 allows sequential staged injection of up to 16 injectors, and will drive up to 32 injectors. The REM also has additional Analogue and Digital inputs which can be used for data acquisition as well as additional Digital outputs.