2014 Subaru Impreza WRX STI

$27,500

I've owned this STI since July 2024. I have had a lot of work done to this car to make it one of the cleanest STI hatchbacks on the road. The big preventative mods have been done to address the typical STI pain points. At the end of September 2024, the car spun a rod bearing and began the process of replacing the short block. The full build invoice can be seen in the photos. I will also list everything that was replaced on the car during the build. Entire engine build, break-in process and dyno tune after the build were professionally performed by YimiSport Tuning. The chassis has 87,000 miles and the engine has 8,400 miles. The car was built with accompanying mild mods, dynoing at 304whp/338wtq.

2014 Subaru Impreza WRX STI

Specs

87k miles (chassis) 8,400 miles (engine)
RA EJ257 Turbocharged 2.5-Liter Flat-Four
Six-Speed Manual Transaxle
Driver Controlled Center Differential
Limited-Slip Front & Rear Differentials
Dark Grey Metallic Paint
All-Wheel Drive
Carbon Black Leather & Alcantara Upholstery
18" OEM Forged BBS Wheels
91 Protune (by YimiSport Tuning)
Cobb SF Intake
Invidia Catted Downpipe
Tomei Expreme Ti Catback Exhaust
Cobb Accessport Tuner
OEM HID Headlights
Heated Front Seats

The paint and interior are in amazing condition. No dents or major scratches on the paint. The paint was professionally 2-step corrected and ceramic coated with Gyeon 3 year coating. The wheel faces and exterior plastics were also coated. The interior is in immaculate condition with no scratches, tears or broken tabs on any leather/suede or plastics. I have gone above and beyond to make this car stand out from the rest of the STI’s on the road.

Below is a timeline of what was done to the car right after I purchased it. All work was professionally performed by Aristocrat Autosport:

August 2024

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Killer B Oil Pan Package (oil pan w/ 6 quart capacity, oil baffle windage tray, ultimate oil pickup)
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GetaDomTune Cylinder 4 cooling mod
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Kartboy Front Endlinks

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IAG Air Oil Separator
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Perrin Pitch Stop
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Tomei Expreme Ti Catback
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Whiteline Rear Endlinks

September 2024

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ITS Pedal Support Bracket
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Whiteline Roll Center Kit
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Replaced Thermostat

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GrimmSpeed Brake Master Cylinder Brace
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Aisin Timing Belt Kit (timing belt, water pump, tensioner, idler pulleys and gaskets)

Below is a list of parts for the engine build and mods performed by YimiSport Tuning:

September - November 2024

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Brand new Subaru OEM Type RA short block from Subaru (part #10103AD020)
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ARP2000 11mm Head Stud Kit
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JE Proseal Headgaskets
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GSC Power-Divison Exhaust Valve Guides Stopper Style
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Rebuilt Exhaust Cam Gears
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Rebuilt AVCS Intake Cam Gears
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Subaru OEM Engine Variable Valve Timing Solenoid (Part #10921AA020)
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ACT Heavy Duty Street Disk Clutch Kit (ACT SB10-HDSS)
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Resurfaced Flywheel

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Subaru OEM Engine Oil Cooler (part #21311AA120)
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Subaru OEM Hose Vacuum (part #99071AB333)
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Subaru OEM 11mm oil pump (part #15010AA360)
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GSC Power-Divison Intake Valve Guides Stopper Style
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Re-decked Cylinder Heads
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Invidia Catted Downpipe
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Grimmspeed Electronic Boost Control
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Break in performed by YimiSport on the dyno over the course of a few sessions
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Dyno tuned on 91 @ 304whp/338wtq
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Break-in mineral oil changed at 1,500 miles and then switched to Motul synthetic 5w40

December 2024 - August 2025

Additional items

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Perrin 20mm wheel spacers (12/24)
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IAG Street Series transmission mount (12/24)
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1,500 mile Motul break-in mineral oil changed to Motul synthetic 5w40 (2/25)
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Wheels powder coated hyper silver (The Wheel Shop - Riverside - 5/25)
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2,500 mile oil change (6/25)
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Whiteline Anti-lift kit/caster kit (6/25)
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Subaru OEM STI S206 Front Chin Spoiler from Japan (Part ST96020ZR260) 7/25
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Subaru OEM STI Side Skirts from Japan (Part ST96030ZR020) - 7/25
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Coolant Flush to change to Subaru Blue Long Life (7/25)
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Brand new OEM rear bumper (7/25)
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Replaced rear section of Tomei Expreme Ti Exhaust (7/25)
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Hood and hood scoop repainted to remove road chips (7/25)
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Cobb Intake Filter replaced (8/25)
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Brand new Odyssey Battery (8/25)
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2 step paint correction w/ 3 year Gyeon ceramic coating, wheels/plastics coated, engine bay cleaning, interior detailed and seats/carpets treated - professionally performed by Urban Detailology (8/25)

More Additional Items

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Brand new OEM grille - Aug 2024
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Hella horns - Aug 2024
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Valenti tail lights - Aug 2024
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Replaced windshield because of crack - Apr 2025 (KD Auto Glass - Ontario)
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Rallyarmor mud flaps - Aug 2024
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Morimoto LED fog lights - Aug 2024
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Custom painted black housing OEM headlights purchased from Japan - Aug 2024
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20% front ceramic tint/5% rear ceramic tint - Aug 2024
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OEM Audio+ System 500 Subwoofer (Installed before my ownership)
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Pioneer MVH-1400NEX (Installed before my ownership)
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(Feb 2021) - steering rack r&r, Oem seal kit at Fat Racing (20k miles ago - Installed before my ownership)
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(June 2021) - 60k service with power steering flush at Fat Racing (20k miles ago - Installed before my ownership)