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Marcus’ 2005 STI

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Marcus’2005 STI

Platform2005 WRX STI
EngineEJ25
TurboGTX3576R Gen II
PowerTo be supplied
The project

A two-year owner build that needed the last, hardest ten percent.

Marcus has known Diego through the Subaru community for about a decade. He rebuilt the engine himself with his girlfriend over roughly two years, checking every part for dirt, hair and metal shavings at every step. The result was a clean, knock-free engine. He brought it to Mico Motorsports for a flex fuel system and the finishing work.

“When you have as much experience as I do, you know all the ways you can creatively route different wires and hoses to make the engine bay look as clean as possible.”Diego Rodriguez · Mico Motorsports
Fabricating a custom bracket
What we did

Our work

  • Implemented the COBB flex fuel system
  • Fabricated a custom bracket to relocate the fuel filter and make better use of the bay
  • Re-routed hoses and wiring for a cleaner engine bay
  • Moved components to mitigate heat soak
  • Fixed muffler-tip contact with the rear bumper
  • Recommended bringing the removed A/C system back
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Build sheet

Specification

Engine rebuild by the owner. Specifications as supplied for this build.

Engine

Block
EJ25
Connecting rods
Manley Turbo Tuff
Pistons
Manley Turbo Tuff, 99.75 mm
Bearings
King XP Race, rods & mains
Oil pump
11 mm, ported
Camshafts
GSC S2
Valvetrain
GSC

Turbo

Kit
ETS rotated turbo kit (speed density)
Couplings
ETS V-band throughout

Fuel

Injectors
Injector Dynamics 2000cc
Lines & rails
IAG, with Aeromotive FPR
Pumps
Radium dual-pump hanger, 2× Walbro 450
Flex fuel
COBB flex fuel system
Next step

Finish your build.

Flex fuel, fabrication, or the last details an owner build needs. Let’s talk about yours.