524HP 2007 Subaru Impreza STi hits the DYNO | Equal length headers, Screamer pipe EJ25 sounds! Acceleration & Sound by turboandstance - December 6, 2025 Turn up your speakers and get ready for pure Subaru adrenaline! In this freshly re-edited 2022 dyno session, a 524hp 2007 Subaru Impreza STi storms the rollers with brutal EJ25 boxer attitude. Upgraded with a Garrett G25-660 turbo, forged internals, equal-length headers, and a screaming screamer pipe, this STi delivers the kind of sound every Subaru fan lives for. Shot at VA.MA Preparazioni, the improved video and audio quality capture every whistle, flutter, and roar as this beast gets pushed to the limit. Whether you’re obsessed with turbo spool, boxer rumble, or high-boost dyno pulls, this clip is pure car-enthusiast heaven. The massive intercooler, HKS blow-off valve, and high-flow upgrades let the EJ25 sing with over 500 horsepower of raw rally-bred fury. Watch it tear up the dyno and rip through the streets with spine-tingling precision. Hit play, sit back, and enjoy one of the cleanest and rowdiest Subaru STi dyno videos you’ll find! 🚀🔥 For more content like this one follow us also on Facebook, Pinterest or Instagram!