Denso/KyosanFuel Injection Pressure Regulator For 93-95 Mazda RX-7. Engine Bore Inch = N/R Engine Stroke Inch = N/R. 1.3L 1308CC R2 GAS Turbocharged. Engine Bore Inch = N/R Engine Stroke Inch = N/R Addl Note.. APPLICATION 1993 MAZDA RX-7 1.3L R2 1994 MAZDA RX-7 1.3L R2 1995 MAZDA RX-7 1.3L R2.