Engineered to keep things low, balanced, and smooth, the Subaru boxer engine might be one of the best-kept secrets in ...

When Subaru announced it was bringing an S-series WRX STI to the US for the first time, we wondered what engine would power it. A turbocharged boxer-four, obviously, but the Japan-only S208 used a 2.0 ...

Although fans and owners of the WRX STI hoped that Subaru would offer the 2.0-liter turbo flat-four in the STI S209 for North America, the Ebisu-based automaker didn’t make their wish come true. The ...

Since we last left off with our Subaru build, we repaired and upgraded our EJ25 cylinder heads with a set of Kelford R-199-B (264/260 duration) camshafts and Supertech valvetrain, and got the head ...

Japanese oil company ENEOS displays five modified race cars at this year’s SEMA Show, with the Porsche 911 GT3 STI as its most ambitious project. It’s again an engine swap, replacing the iconic ...

CHICHESTER, UK – The Prodrive P25 made its public debut last weekend at the Goodwood Festival of Speed, and while there, Prodrive Chief Engineer Richard Thompson took us through some interesting ...

Limited to just 75 examples, the rally-bred limited edition paves the way for the new WRX arriving later this year and the fresh STI version likely to launch in 2022. Subaru’s performance hero has ...

The flat-four Subaru EJ engine is like that tough old man who's a fixture at a local dive bar: he won't start shit with you, but he'll definitely finish it if you step to him. Now, after 30 years in ...

Overboosting. A turbocharged engine's worst nightmare and root of disaster that claimed the life of millions of healthy engines around the world. Rewind the clock back to 2010 when my '05 Subaru ...