They both need Engine Managment to account for the change in air/fuel needed.
The CTSC does have the most basic of fuel management and also relies on the higher intake temps to trick the OEM ECU into removing the needed timing for the engine to survive the added boost. The CTSC uses an ESM provided with the kit to stop the OEM ECU from seeing the boost with the MAP sensor, and a Rising Rate Fuel Pressure Regulator combined with a Boost-a-pump for added fuel.
The BBSC's tried to correct both fuel and timing with a piggy back ECU made by Split Second, they were never completely developed and when installed could cause detonation and engine failure, most if not all were removed and an AEM ECU or AEM F/IC were installed to handle the engine management.
Dave