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Stage 2

GRB STI Stage 2 Big Turbo Build

Full turbo upgrade with FMIC and E85 support for 420+ whp.

Subaru WRX STI (GRB)400–450 hp target

Parts List (8 components)

Required Parts (5)

#1Blouch Blouch Dominator 2.0 XT-R (EJ257)

4.7Advanced+40–90 hp

Turbo

$1,799.00

from 2 suppliers

#2Perrin Perrin Front Mount Intercooler (STI)

4.6Advanced0

FMIC

$1,299.00

from 2 suppliers

#3Injector Dynamics Injector Dynamics 1000cc (EJ257)

4.8Intermediate0

Injectors

$699.00

from 2 suppliers

#4Cobb Cobb Accessport V3 (STI)

4.8Easy+10–30 hp

Tune

$721.07

from 2 suppliers

#5ACT ACT Heavy Duty Clutch (EJ257)

4.4Advanced0

Clutch

$595.06

from 2 suppliers

Optional Upgrades (3)

#96Enkei RPF1 17x9 +35 Wheel

×4

4.9

Set of 4 lightweight forged wheels

$1,380.00

from 2 suppliers

#98Mishimoto Compact Baffled Oil Catch Can

4.6

Keeps intake clean on turbo builds

$112.75

from 34 suppliers

#99AEM X-Series Wideband UEGO AFR Gauge

4.8

Essential for tuning; mount in A-pillar pod

$199.99

from 2 suppliers

Cost Summary

Required parts (5)$5,113.13

Optional upgrades (3)+$1,692.74

Total (best prices)$6,805.87

Prices from lowest available supplier. Does not include shipping or labor.

Community Attribution

subie_hatch

NASIOC

GRB hatch build for time attack events with detailed dyno results

View original build thread

Community builds are sourced from public forums and social media. Parts lists may have been adapted for clarity. Always verify compatibility before purchasing.