Unlocking 1030WHP From An EJ25 | Subaru STI Drag/Street Build [TECH TOUR]

Running 1030WHP at 42 PSI via an Extreme Turbo Systems prepared Precision Turbo & Engine 7675 turbocharger, IAG Performance Stage 4 block, GSC Power-Division cams, and valve springs, Headgames Motorworks ported head just to name a few things, the English Racing built 2013 STI of Brandon Huntley (@scrappysti_115 on Instagram) is one very well setup Subaru WRX.

The Manley rod, pistons and crank fitted EJ25 head cylinder sealing is done via an MLS gasket with stainless steel o-rings to give greater clamping force along with oversized 14mm ARP head studs to seal the deal and a Boomba Racing 74mm DBW throttle body and Process West machined intake manifold sits on the top. A Magnus Engineering dry sump kit with Peterson pump has been fitted to make sure bearing life is not an issue.

M1 Racing Methanol fuel is fed to the EJ via 8 Injector Dynamics ID2000 injectors and all of this is controlled via a Motec Systems USA M1 with a John Reed Racing package that allows the car to retain all the factory dash and steering wheel button functions including cruise control, as well as monitoring fuel, oil, and coolant pressures to adjust to the conditions the car is running in and maintain reliability.

One of the last pieces of the puzzle is getting power to the ground, and this is done with a PPG dog engagement gear set that sees 1st to 4th replaced but retained the factory 5th and 6th gear for street use. The H pattern box is fitted with a strain gauge for clutchless shifting, Exedy triple plate clutch, and Driveshaft Shop axles and shafts along with Torque solution engine transmission and suspension components have been fitted to handle the increased output.

What to learn how to tune EFI? Start here instantly, for free.

Comments

No one has commented on this page yet.