Closed deck is one of the most used terms in WRX and STI build conversations and one of the least explained. Most owners know it means a stronger engine. Few know exactly…
The Boost Lab TD06SL2-54X is one of the most capable bolt-on turbo upgrades available for the WRX and STI platform. It delivers serious power without requiring a custom turbo manifold or an…
OLM makes the best exterior upgrades for the WRX and STI because the lineup covers the full car in a consistent design language. Front lip, rear spoiler, under-hood details, mirror covers —…
BC Racing Swift Springs are one of the most searched BC Racing upgrades for the WRX and STI and one of the least understood. Most owners know they exist but are not…
The most common WRX and STI build mistake is buying mods in the wrong order. A tune without supporting mods. A big turbo on a stock block. An exhaust before the fueling…
Upgraded transmission mounts are one of the least talked-about drivetrain upgrades on the WRX and STI and one of the most effective for improving shifting feel and drivetrain stability. The stock mounts…
The best clutch upgrades for the WRX and STI match the power level and how the car is driven. The stock clutch handles factory power well. As boost and torque increase, it…
The best intercooler upgrades for the WRX and STI drop intake temps and support more consistent power delivery as builds grow. The stock intercooler handles factory boost levels well. As soon as…
The best oil catch can for the WRX and STI is one built specifically for the platform. Oil blow-by is a known characteristic of the EJ and FA engine family. Combustion gases…
OLM is one of the most recognized brands in the WRX and STI aftermarket for a reason. It is not because they make one iconic product. It is because they cover the…
The COBB Accessport is the most recognized tuning device in the WRX and STI community. Most owners know they want one. Fewer are clear on exactly what it does or whether the…
The best air intake upgrades for the WRX and STI are also some of the most accessible performance mods you can do. No lift required. No major supporting mods needed. The improvement…
The WRX and STI already have strong visual character from the factory. The hood scoop, the aggressive stance, the rear spoiler on the STI — the bones are good. Exterior upgrades are…
More power means more heat. On a turbocharged platform like the WRX, that heat shows up in three places: the intake charge coming from the turbo, the engine coolant, and the engine…
The most common big turbo WRX mistake is installing the turbo before the car is ready for it. A bigger turbo on an unprepared build does not make more power reliably. It…