2007 Impreza; Engine - Subaru 2007 B-9 Tribeca Technicians Reference Booklet

2007 New Model Update

2007 IMPREZA

ENGINE

2.5L SOHC: (NON-TURBO)
Horsepower: 173 HP @ 6000 RPM
Torque: 166 LB-FT @ 4400 RPM
2.5L INTERCOOLED TURBO
Horsepower: 224 HP @ 5600 RPM
Torque: 226 LB-FT @ 3600 RPM
2.5L INTERCOOLED HIGH-OUTPUT TURBO
Horsepower: 293 HP @ 6000 RPM
Torque: 290 LB-FT @ 4400 RPM
The WRX STI and WRX STI Limited now utilize solid rubber engine mounts
The Sodium filled exhaust valves have been deleted from the WRX STI and WRX STI Limited
The WRX STI and WRX STI Limited now have a revised cylinder head design to improve cooling
EMISSIONS
The WRX STI and WRX STI Limited now comply with the LEV 2 emissions rating
The WRX STI and WRX STI Limited now have a secondary air pump to improve emissions
TRANSMISSION
The WRX STI and WRX STI Limited now have new gear ratios in the 2nd, 3rd, and 4th gear for
improved fuel economy and drivability
ELECTRICAL
The WRX STI and WRX STI Limited now utilize a 110A alternator
AWD SYSTEM
The WRX STI and WRX STI Limited now utilize a TORSEN Limited Slip Rear Differential in the for
enhanced performance
WHEELS
17 inch 10-spoke aluminum-alloy wheels with 225/45R17 tires are standard on all WRX STI Limited
models
SUSPENSION: ALL WRX SEDAN
Front: Front:
Front: Front: Front:
Aluminum alloy lower L-Arms have been changed to steel on the front suspension of the WRX
sedan
Rear: Rear:
Rear: Rear: Rear:
Aluminum alloy lower parallel links have been changed to steel on rear suspension of the WRX
sedan
* Refer to STIS (Subaru Technical Infromation System)
2007 Impreza Page 86
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*** New Feature
August 2006