CHRIS PETRUCCIO · 2005 LEGACY GT · HALTECH
Krispy’s Legacy GT.
A Subaru wagon with a distinctive finished engine bay and a long development history. My chapter is its Haltech calibration at AWD Tuning, documented by separate 93-octane and E75 dyno sessions.
Discuss my Haltech build →
- CAR
- 2005 Subaru Legacy GT wagon
- MANAGEMENT
- Haltech · tuned by Keith Fields
- E75 SESSION
- 687.9 hp / 503.9 lb-ft
THE FINISHED HARDWARE
A closer look under the hood.
The finished bay brings the turbo, intake plumbing and cooling layout into view. The photos show a Garrett-branded turbo, Vibrant-branded titanium plumbing and carbon-fiber panels surrounding the engine. They document the car’s later presentation at Subiefest; the dated tuning results below stand on their own.
KEITH’S CALIBRATION · MUSTANG DYNO
Two fuels. Two dated sessions.
These are the maximum power and torque values recorded in the original PowerDyne ActiveReports, using the weather-corrected channels. They are not estimates read from the smoothed curves.
| Session | Peak power | Peak torque |
|---|---|---|
| 93 octane August 28, 2024 | 553.3 hp 7,212 rpm | 428.3 lb-ft 5,832 rpm |
| E75 · 32 psi September 6, 2024 | 687.9 hp 7,499 rpm | 503.9 lb-ft 5,953 rpm |
The plotted curves use the original FIR smoothing setting of 35. The headline figures come from the separate ActiveReports peak fields, so they can be higher than the smoothed curves.
The original report filenames identify the fuel and the E75 boost level. Both reports identify Chris Petruccio’s 2005 Legacy. These are separate fuel sessions, not a stock-versus-modified comparison; output depends on the combination and test conditions.
AWD TUNING · SUBIEFEST 2025
See the Legacy in the lineup.
AWD’s October 17, 2025 reel brings together two Legacies and two STIs from its Subiefest display, tagging Krispy Media among the featured owners. It adds event footage to the finished-build photographs above.
Watch AWD’s Subiefest lineup ↗The owner’s longer build story
Chris’s own video archive follows the Legacy’s earlier development. That history predates the 2024 Haltech sessions documented here and includes work by other shops.
Players connect to Facebook or YouTube only when selected. Provider restrictions may require opening the original source.
Explore Krispy’s Legacy video series ↗Build around your own goals.
Planning standalone management for a Legacy, WRX or STI? Tell me your engine, turbo, fuel system and intended use so we can plan the calibration around the complete car.
Talk with Keith about my build →More Haltech projects.
Corey’s 2005 STI · Precision 6466 & Elite 2500 →