KEITH’S OWN CAR / 2015 SUBARU STI
My white 2015 STI makes 750 whp with a Precision Gen 2 6466. It connects my engine-building work with my tuning: a custom closed-deck EJ257 with UEM pistons, Manley rods and GSC head components, years of turbo development and a later Emtron chapter. The archive follows the car through its changing configurations.
Explore the build history ↗
AWD’s 2016 turbo-development post describes my goal: a daily-driven STI with a useful power band, built around the requirements of the FIS class for events such as Import Face-Off. That balance gives the project its identity—hardware, response and the intended use considered together.
The useful part of a long-running project is seeing how the decisions connect: engine construction, turbo choice, fuel delivery, drivetrain work and calibration. Each stage starts with the hardware actually on the car.
Read the original development brief →
THE CAR OVER TIME
AWD’s original first-start footage documents an early chapter of my white 2015 STI. The car continued to develop after this video; the engine and hardware section below describes my 750-whp combination.
Watch the first-start video →My development brief focused on a daily-driven STI with a useful power band and competition in mind. That work led to the Precision Gen 2 6466 combination featured here.
Read the original development brief →AWD’s photo post captures my white STI on Mickey Thompson tires, along with a closer look at the engine bay.
View the original two-photo post →AWD documents removal of my 2015 STI gearbox for a refresh ahead of a February 1 local meet. The post connects the same personal car with continued drivetrain work years after the original engine build.
See the transmission update →AWD’s video titled 2015 STi Emtron LC testing shows the white STI on the dyno. Its description identifies an Emtron KV8 and testing of motorsport functions. This is setup footage, not a timed acceleration run or a peak-power measurement.
Watch the Emtron test →The event archive follows my white STI through the paddock, staging area and burnout box. The original photos and video add the track-day chapter to the workshop development shown above.
Watch the event footage →THE CAR / THE ENGINE / THE DETAILS
Explore the completed car and engine bay, from the AWD workshop to sunset photos. These original photographs show different chapters of the build; the development timeline separates the dated stages.
Original AWD Tuning photo archive. Select a photo for the larger image.
MY 750-WHP COMBINATION
I built and calibrated this combination around the car’s street and competition use. The engine components, fuel delivery and turbo setup work together as a complete package.
POWER & DEVELOPMENT
My STI makes 750 whp with the Precision Gen 2 6466, custom closed-deck engine, AWD fuel system and HKS exhaust. The later Emtron KV8 chapter adds motorsport-function development to the car’s history.
The archive below follows the car from workshop testing to Import Face Off. The launch-control clip shows function testing; the event clips show the car in the paddock and staging lanes.
IMPORT FACE OFF / NOVEMBER 2, 2025
This is my white 2015 STI at Import Face Off. The original event archive follows the car from the AWD paddock to the staging area and burnout box.
The 40-second clip starts under the staging-area roof, follows the car toward the lanes and shows the white STI preparing at the burnout box. The clip covers preparation before a run.
A closer walk-around beside the white STI as it waits near the lanes, showing the car’s gold wheels, front end and rear.
A front-to-rear walk-around of the STI among the parked event cars, before heading toward the staging area.
Original Import Face Off photos and video · November 2, 2025. Power figures elsewhere on this page belong to their separately documented development stages.
ORIGINAL AWD ARCHIVE
Start with the built-engine first-start video, then see the later Emtron function testing. Each clip stays with its own development stage.
Original AWD Tuning footage · February 2016 · Plate blurred for privacy
Original AWD Tuning footage · May 2025 · Plate blurred for privacy
The engine and hardware details above come directly from my own build. The dated AWD photos and videos follow its development over the years.
Explore Keith’s wider history · More featured builds · Lucas’s GT STI
YOUR SUBARU / YOUR NEXT STEP
Tell me your year, model and goal. We’ll discuss your hardware, fuel and tuning options around your own setup. No payment is required to ask a question.
Ask Keith about my Subaru →