The Spec C has always been a more hardcore version of the Impreza, somewhat like a track special. A Spec C is usually lighter, more powerful, and stiffer in the handling department.
The latest Impreza hatch finally gets its Spec C variant. The turbo has been upgraded with new ball bearings, and the intercooler gets a water spray to prevent higher intake air temperature after long periods of hard driving. The 2.0 litre boxer puts out 308 PS at 6,400rpm and 422Nm of torque at 4,400rpm. A new fuel pump has been supplied to enable stable fuel delivery even during hard driving.
Handling improves via various chassis enhancements such as the reinforcement of the front suspension crossmember thus improving steering response. The suspension damping force, and spring rate have been revised along with the specifications of the rear stabilizer and rear subframe bushes, all to provide tighter handling and road-holding ability. The rear LSD has been changed from a Torsen (torque sensing) type to a mechanical type.
Weight has been shaved off via the use of an aluminium engine hood, a smaller battery, laminar glass for the front and side windows, lighter 18 inch alloy wheels, and a flat tyre repair kit instead of a spare tyre. The tyres supplied are Bridgestone Potenza RE070 tyres with 245/40R18 size all-round.
The new Impreza WRX STI Spec C is limited to 900 units in Japan.
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