Wicked Power. The all new Street Demon redefines the street carburetor with clean looks and ease of use. The Street Demon offers enthusiasts a straightforward carburetor designed to deliver a stable idle/amazingly crisp throttle response/smooth performance. Its optimized calibration and dual mounting pattern make it Run-Ready for a large variety of engines and vehicles.2 Stage metering rods control easily accessible without carburetor disassembly or removal