How much boost is too much for a Subaru FA20DIT engine ... world subjected to all manner of amateur and professional tuning as the WRX. And the turbocharged 2.0-liter FA20 featured in this ...

Subaru introduced the WRX TR trim for gearheads interested in tuning the compact sedan themselves. However, in 2025, the Japanese automaker discontinued the TR and replaced it with the WRX tS ...

The verdict: The new-for-2024 Subaru WRX TR trim brings a sharper ... it doesn’t get a hotter engine. The swan-song 2021 WRX STI packed a high-output flat-four engine making 310 horsepower ...

The user control factor comes in because drivers can tune the engine by plugging in ... performance machinery" (including a 300 bhp Subaru WRX) next weekend (Sept. 22nd) in Wiltshire.

Subaru has confirmed the gas-fed STI is ... R take the edge when it comes to sheer power. Despite being “tuned by STI,” the WRX tS carries over the same 271-horsepower engine as the rest ...