Custom Builds
Embarking on the exploration of the 2023 Subaru WRX and its FA24 turbo platform, we opted for the base trim, prioritizing minimalistic features for reduced weight. Our initiation involved strapping the vehicle to the DynoJet 424xLC Linx dynamometer, revealing a stock baseline of 263.89whp and 258.98 ft-lb torque. An intriguing revelation unfolded: the WRX operates on "open loop" fueling during wide-open throttle, relying on a meticulously calibrated mass airflow meter in the stock airbox. This means modifications influencing airflow are seamlessly accommodated, a crucial insight for future enhancements.Despite the initial absence of custom tuning support from Cobb, we took a bold step, introducing modifications like the Extreme Turbo Systems catback exhaust and top-mount intercooler. The results were impressive, boosting power to 268.51whp and 265.52tq. What's fascinating is the consistent power gains below 4000rpm, courtesy of the adept boost control system. Even with cosmetic upgrades like Enkei wheels and Falken tires, which subtly affected dyno measurements, the overall performance witnessed a notable ascent. Stay tuned for the visual journey through dyno graphs, showcasing the stock baseline and the transformative impact of our strategic modifications!
