is the twin-turbo Model of the 13B engine meant to electrical power the 3rd-generation RX-7 introduced in late 1991. Each and every rotor on 13B-REW has only one combustion chamber volume of 654cc. With two rotors, the overall displacement was 1308cc. Perfect in shape to get a Mazda swap or alternative project.Throttle response is a tad gradual whe