WRX STi EJ257

Connor McKinley

See more images and videos: @ej.god

Henson & Murray Engine Builders – New Zealand

Possum Bourne Motorsport

Engine shortblock:
EJ257 CNC closed deck
CP 8.2:1 99.75mm forged pistons
Manley H-Tuff rods
Factory nitrated crank
ACL Race bearings
ARP 625+ Custom Age headstuds
Cometic MLX headgaskets
KillerB oil pickup
Possum Bourne baffled sump

Engine heads:
EJ257 W25 Series 2 heads
Kelford 220-C cams 272/268 11.30mm-10.50mm/10.50mm Valve Lift
Kelford Valve Springs
Kelford Titanium Retainers
Ported intake/exhaust ports

Engine hotside:
Custom rotated turbo pedestal
Custom up pipe with wastegate
38mm Turbosmart Gen IV wastegate
Garrett GTX3076R Gen 2 w/ 0.83 A/R rear housing
KillerB headers
Custom downpipe
Invidia R400 catback

Engine coldside:
Corsa Veloce intake manifold
IAG V2 TGV deletes
Custom 2.75” intercooler piping
ProcessWest front mount intercooler kit
4” intake and podfilter
Turbosmart Raceport BOV

Engine Management:
Link ECU G4X plug & play tuned by Possum Bourne Motorsport in Pukekohe, NZ
Link IAT sensor
Link fuel pressure and temp sensor
Innovate wideband O2 sensor
3 port electronic boost control solenoid

Fueling:
Bosch 1650cc injectors
Aeroflow fuel rails
DW300C 320lph in tank lift pump
ProcessWest surge tank with single Walbro 460lph
Turbosmart FPR6 fuel regulator
-AN6 fuel hoses

Engine supporting mods and dress up:
GrimmSpeed AOS
KillerB oil filler relocation
Mantic stage 3 cerametallic single plate clutch
Perrin radiator shroud
Perrin alternator shroud
Perrin quarter panel shrouds

Suspension:
Tein Flex Z coilovers
Hardrace rear lower control arms
Whiteline 24mm rear sway bar
Whiteline rear adjustable endlinks
Whiteline front roll centre correction kit

Wheels & tyres:
Work Meister S1 3P 18×9.5 +37
265/35/18 Vitour semi slicks

Exterior:
CircuitDemon headlights
Facelift front bumper
Aftermarket front lip
OEM STi side skirts
OEM STi rear spats
Varis rear spoiler
Flow Designs rear diffuser
Vortex generator
Aftermarket taillights

Project Details
  • Owner:

    Connor McKinley

  • Location:

    New Zealand

  • Cams Purchased via:

    Possum Bourne Motorsport

  • Engine Builder:

    Henson & Murray Engine Rebuilders

  • Tuned By:

    Possum Bourne Motorsport

  • Vehicle Make:

    Subaru

  • Model:

    WRX Sti

  • Engine Model:

    EJ257

  • Camshaft Specs:

    272°-268°/268° | 11.30mm-10.50mm/10.50mm Valve Lift

  • Intake:

    Corsa Veloce Intake Manifold

  • Turbo:

    Garrett GTX3076R Gen 2

  • ECU:

    Link ECU G4X

  • HP at the wheels:

    500whp/375wkw

  • Torque:

    600nm/442ftlb @ 22PSi of boost

  • Camshaft Product:

    Stage 2 High Lift Cams