This comprehensive service repair manual provides you with everything you need to maintain and repair your 2004-2005 Subaru Impreza WRX STI Turbo. Gain access to detailed information and instructions covering a wide range of topics, allowing you to confidently tackle your own repairs and maintenance tasks. This manual offers in-depth guidance on everything from routine maintenance like oil changes and filter replacements to more complex repairs such as engine overhauls, transmission work, and electrical system diagnostics. With this manual, you can save time and money by performing repairs and maintenance yourself, while gaining a deeper understanding of your vehicle's inner workings. Whether you're a seasoned mechanic or a DIY enthusiast, this detailed service manual equips you with the knowledge and information necessary to keep your Subaru Impreza WRX STI running smoothly and reliably.

The Subaru Impreza WRX STI, produced from 2004 to 2005, is a high-performance sports sedan that embodies Subaru's commitment to rally-bred performance and all-wheel-drive prowess. Built upon the foundation of the already potent Impreza WRX, the STI adds a host of performance enhancements, including a larger turbocharger, a more aggressive intercooler, and a revised ECU tuning for increased power and responsiveness. The heart of the STI is its 2.5-liter EJ257 boxer engine, renowned for its smooth and powerful delivery. This engine, capable of generating 300 horsepower and 300 lb-ft of torque, propels the STI from 0 to 60 mph in under 5 seconds, making it a serious contender on both the road and the track.

Beyond its raw power, the 2004-2005 Impreza WRX STI is praised for its exceptional handling and grip. The Symmetrical All-Wheel Drive system, a hallmark of Subaru vehicles, distributes power evenly to all four wheels, providing unmatched traction and stability, even in challenging conditions. The STI also features a sport-tuned suspension with firmer springs and dampers, a stiffened chassis, and a limited-slip differential, contributing to its precise handling and agility. This combination of power and control makes the Impreza WRX STI a true driving enthusiast's car, capable of delivering both thrilling performance and a high level of driver engagement. The 2004-2005 Impreza WRX STI is a testament to Subaru's dedication to engineering vehicles that deliver both performance and practicality, making it a highly sought-after and respected model among car enthusiasts.