After experiencing bearing failure with the original EJ257, Matthew decided to take the opportunity to turn up the wick on his 2005 Subaru WRX STi! Build setup below:

 

Pre-existing:
• Extreme Turbo Systems front-mount intercooler
• Invidia Exhaust down-pipe
• COBB Tuning 3-port electronic boost control solenoid
 

Performed by us:
• IAG Performance 600 long block with Stage 2 V25 CNC ported cylinder heads
• GSC Power-Division valve train and S2 camshafts
• ARP cylinder head studs
• Forced Performance Turbochargers FB Blue turbocharger
• Killer B Motorsport equal length Holy Header
• TiAL Sport 38mm MV-S wastegate
• COBB Tuning turbocharger inlet
• IAG Performance Street Series air/oil separator
• Getadomtune cylinder 4 cooling modification
• STI 11mm oil pump
• Injector Dynamics ID1050x fuel injectors
• Injector Dynamics top-feed conversion fuel rail kit
• COBB Tuning Flex Fuel conversion
• AEM Performance Electronics 320lph High Flow in-tank fuel pump
• Advanced Clutch Technology HDSS clutch kit
• Advanced Clutch Technology streetlight flywheel
• All the miscellaneous OEM Subaru gaskets, seals, and components to complete the installation

 

With the mechanical work wrapped up by Andrew in the shop, Matt strapped her down to the rollers for Vlad to perform a custom Flex Fuel calibration via COBB Tuning's Accessport V3. Since this car is shipping back out west, we calibrated for 91 octane rather than 93 octane. However, even on the 91 octane calibration, Vlad increased output to 374.66awhp & 471.28lbft, and then with E85 in the tank and the FB Blue delivering ~28psi, output increased to a strong 475.66awhp & 471.28lbft!