is the dual-turbo Variation from the 13B engine built to power the 3rd-generation RX-7 launched in late 1991. Each individual rotor on 13B-REW has an individual combustion chamber volume of 654cc. With two rotors, the total displacement was 1308cc. Ideal in good shape to get a Mazda swap or substitute task.Throttle response is a little sluggish whe