The 2.0 L (1991 cc) FS has an 83 mm bore and 92 mm stroke and produces 130 hp and (97 kW) and 135 lbf·ft (183 N·m) in its most common variant up to 170 hp in the Japanese Domestic Market. In 1998 the engine evolved into the FS-DE by undergoing several changes, most notably a distributorless ignition as well as the move from hydraulic lifters to solid shim-on-bucket lifters. Japan received a couple of variations of the FS motor, all with increased power outputs. The highest being the Mazdaspeed Familia version of the FS-ZE which produced 170 hp. Mazdaspeed US decided to turbocharge the US FS-DE, known as the FS-DET in 2003 for the Mazdaspeed Protegé and it generated 170 hp (127 kW) and 160 lbf·ft (217 N·m), the same hp rating as the naturally aspirated Mazdaspeed Familia edition FS-ZE but with a sharper torque curve. This means that the Mazdaspeed Protegé's engine is internally identical to the regular FS-DE, except with a turbocharger installed.[WIKI]
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