The 2004 Subaru Impreza WRX STi holds a special place in the hearts of rally enthusiasts as the first official STi offered in North America. While most surviving examples show the scars of a hard life, this low-mileage specimen spent a decade tucked away in storage. After its long slumber, it underwent a radical transformation that pays homage to another Japanese legend through its unique color choice. This build proves that a classic platform can be modernised while respecting the mechanical soul that made it famous. It is a rare opportunity to see a pristine chassis meet a high-level street performance vision.
Supra Aesthetics on a Rally Icon
The most striking change to this sedan is the professional repaint in Toyota-specification Deep Jewel Green. This iconic shade, usually reserved for the MK4 Supra, gives the aggressive Subaru body lines a sophisticated and premium look. A custom front lip spoiler and an aftermarket hood scoop further enhance the aerodynamic profile of the car. Newer headlights and a classic rear wing ensure the silhouette remains unmistakably STi despite the radical color shift. This aesthetic choice bridges the gap between different worlds of Japanese car culture. It results in a look that is both subtle and deeply memorable.
Chassis Tuning and Footwork Upgrades
To match its new look, the chassis received a comprehensive overhaul using top-tier components from TEIN and Whiteline. TEIN Flex-Z coilovers provide a lower stance while allowing for adjustable damping to suit various road conditions. Whiteline anti-roll bars and adjustable rear lateral arms sharpen the turn-in response and overall stability. Bronze-finished 18-inch Apex SM-10RS wheels provide a perfect contrast to the Deep Jewel Green bodywork. Behind those wheels sit Brembo calipers powder-coated in yellow, clamping down on DBA Street Series slotted rotors. These upgrades ensure the car handles with modern precision and incredible grip.
Driver Focused Interior and Technology
The interior remains a focused environment with original blue and black perforated Ecsaine bucket seats that show minimal wear. A Pioneer head unit provides modern audio capabilities, while a COBB Tuning AccessPort V3 allows for real-time engine monitoring. Tactile feedback is improved by a Kartboy short-throw shifter and upgraded bushings for a mechanical gear change feel. The seller also ensured comfort by replacing the air conditioning compressor and condenser during the recent build. It is a cabin that respects its early-2000s roots while offering the amenities needed for a modern daily driver. Every surface feels as fresh as the 46k-mile odometer suggests.
Drive-line Reinforcements and Reliability
Power is managed through the legendary six-speed manual transaxle and a driver-controlled center differential for ultimate traction. To handle the increased torque, a Competition Clutch Stage 2 kit was installed along with an IAG performance transmission mount. The undercarriage was completely refurbished, featuring polyurethane subframe bushings and a Group N pitch-stop mount to reduce engine movement. Fresh Motul fluids were used in the transmission and differentials to ensure smooth operation under heavy loads. These reinforcements guarantee that the car can reliably put its newfound power to the ground. It is a drivetrain built for both durability and driver engagement.
Engine Performance and 20G Turbocharger Specs
The 2.5-liter EJ257 flat-four engine received a massive power boost via a COBB Tuning 20G turbocharger and a Process West intercooler. A GrimmSpeed three-port electronic boost controller manages the pressure, while Injector Dynamics 1050X injectors supply the necessary fuel. The exhaust note is amplified by a Tomei manifold and a full Invidia system featuring a high-flow catalytic converter. To ensure internal safety, the build includes a Torque Solutions oil pan, windage tray, and a Fluidampr crankshaft damper. A custom ECU tune installed in late 2025 brings all these high-performance parts into a cohesive and powerful package. It delivers a visceral, turbocharged experience that defines the STi legacy.
Summary of a Revitalized Legend
This 2004 Subaru Impreza WRX STi is a masterclass in how to refresh a modern classic with taste and purpose. The combination of rare Toyota-spec paint and a comprehensive COBB performance build makes it stand out in a crowded market. Having covered only 46,000 miles, the mechanical integrity of this chassis is virtually unmatched. Every system, from the TEIN suspension to the turbocharged flat-four, has been optimized for peak performance. It is a turnkey machine that honors its rally heritage while embracing a custom, high-end street aesthetic. This STi is ready to thrill its next owner with zero reserve.
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Source: bringatrailer.com
