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2015 Subaru WRX STI Limited 2
to determine optimal high power and RPM efficiency
which is slightly heavier than the thin however will have a longer life
The new Blouch XT-R billet compressor wheels are simply amazing and outperform traditional compressor wheel aero by producing more horsepower and torque at lower boost pressures
mid-sized ECU
Outfront Motorsports CNC Ported 975 Racer W25 Cylinder Head Package EJ Engine 2015 Subaru WRX STI LimitedThe Outfront Motorsports 975 CNC Ported Cylinder Heads are the perfect performance head upgrade for competition and racing. These heads are a great option for the racer with engines up to 975 BHP. These are a great option for drag racing, time attack, hill climb or other competitive racing. The Outfront 975 Heads start with new OEM Genuine Subaru head castings. They are then CNC ported to have a big upgrade in flow. A multi angle valve job is