This comprehensive Subaru Impreza WRX STI Service and Repair Manual, covering the 2004 model year, provides detailed instructions and technical specifications for all aspects of vehicle maintenance and repair. The manual encompasses an extensive range of subjects, from routine servicing like oil changes and filter replacements to complex engine and transmission overhauls. Dive into comprehensive wiring diagrams, troubleshooting guides, and detailed component descriptions, empowering you with the knowledge to diagnose and address any mechanical issues. This manual is an invaluable resource for both experienced mechanics and DIY enthusiasts, offering the necessary information to perform repairs confidently and efficiently.

The Subaru Impreza WRX STI, produced from 2004 to 2007, is a high-performance sports sedan that embodies the spirit of Subaru's rally heritage. It's a powerful and capable machine, designed to deliver exhilarating driving experiences on both the road and the track. The STI, short for Subaru Tecnica International, is the most potent version of the Impreza WRX, featuring a 2.5-liter turbocharged boxer engine producing 300 horsepower and 300 lb-ft of torque. This engine is mated to a 6-speed manual transmission, delivering power to all four wheels through Subaru's legendary Symmetrical All-Wheel Drive system. The STI boasts a host of performance-enhancing features, including a revised suspension with stiffer springs and dampers, larger brakes, and a limited-slip differential, enabling it to handle corners with precision and agility. Its aggressive styling, featuring a prominent rear wing, large air intakes, and unique STI badging, further emphasizes its track-focused nature. Beyond its impressive performance, the Impreza WRX STI is renowned for its durability and reliability. This is a testament to Subaru's commitment to engineering and quality, which has made the Impreza WRX STI a favorite among performance car enthusiasts worldwide. Its spacious and comfortable interior, equipped with standard amenities like air conditioning, power windows, and a CD player, provides a well-rounded experience. However, the STI is primarily designed for driving enthusiasts, with its focus on performance and handling taking precedence over luxury and comfort. For drivers seeking a thrilling and engaging driving experience, the Impreza WRX STI remains a compelling choice even today, offering a blend of raw power, precise handling, and iconic Subaru reliability.