Subaru WRX & STI Custom Dyno Tuning & Performance Upgrades
GD · GR · VA · VB
Tuning Subarus since 2000. EJ20 to FA24. Ringwood, Melbourne.
Want something custom? Get in touch.
Pick your generation
Click yours for packages, pricing, and gen-specific info.
What we do
All under one roof
Service department, performance shop, dyno bay. Same building, same techs.
Servicing & Maintenance
We service every Subaru we tune. AVCS solenoids, DI cleaning, oil cooler installs, pre-track checks, logbook intervals. Same techs who built it look after it.
- Logbook servicing
- Cooling & AVCS
- Diff & gearbox fluids
- Pre-track inspections
Performance Upgrades
Bolt-ons through to closed-deck builds. We supply, fit, and tune. EJ to FA. We know what works on each.
- Intake, exhaust & headers
- TGV delete
- Turbo upgrades
- Engine builds
Custom Dyno Tuning
Custom dyno tuning w/ EcuTek and Cobb on our in-house Dynapack. Every map is built from scratch for your car. No flash files, no canned maps.
- EcuTek & Cobb
- E85 & flex fuel
- Boost & launch control
- Before/after dyno sheets
Case Studies
Recent WRX & STI builds
Performance Parts
Parts we fit on the WRX/STI
If we wouldn't put it on our own WRX/STI, it's not on this page.
HKS
Turbo kits, exhaust & oil coolers. Fits your WRX/STI
EcuTek
Factory ECU custom tuning. Fits your WRX/STI
Öhlins
Coilovers for street and track. Fits your WRX/STI
Invidia
Catbacks, downpipes, test pipes. Fits your WRX/STI
Korsh
Titanium catbacks, headers, TGV deletes. Fits your WRX/STI
Brembo
Big brake kits, pads, rotors. Fits your WRX/STI
Endless
Brake pads and fluid. Fits your WRX/STI
Exedy
Clutches and flywheels. Fits your WRX/STI
Bilstein
Monotube shocks. Fits your WRX/STI
H&R
Springs and sway bars. Fits your WRX/STI
Process West
Intercoolers and intake systems. Fits your WRX/STI
Motul
Engine oils and fluids. Fits your WRX/STI
FAQ
What people ask before booking
- How much power can I get out of a stock WRX or STI?
- Depends on the generation and what's already on the car. A bolt-on package (exhaust, intake, intercooler) on a stock turbo gets you 250-280 kW at the wheels on E85 with a proper tune. Big single turbo on a built motor and you're well into the 350-400+ kW range. Numbers from our dyno, not catalogue claims. Power on its own isn't the goal. We tune for power that's there when you want it and doesn't break the car.
- Do you tune both EJ and FA Subarus?
- Yes. EJ20, EJ25, EJ255, EJ257 across the GD, GR, and VA STIs, plus FA20DIT (VA WRX) and FA24DIT (VB WRX). Different engines, different approach. EJ wants careful timing management and good fuelling on E85. FA is direct injection, so injector sizing and intake temps matter more. We've tuned hundreds of both. The playbook changes between platforms, the standard doesn't.
- EcuTek or Cobb: which one should I go with?
- We default to EcuTek for almost every Subaru. Deeper map access, switchable maps, custom dashboards, and the platform we know best. Cobb's AccessPort is the way to go if you want to log and monitor your own data. Pull session logs off the car, see what's going on, send files across for revisions. One exception: the VB WRX is Cobb only. EcuTek doesn't support the FA24DIT. For everything else, EcuTek's the default unless you've got a reason for Cobb.
- Is flex fuel worth it on a Subaru?
- Almost always, yes. The FA20DIT and FA24DIT love the cooling effect of ethanol, which lets us run more boost and timing safely. EJs benefit too, especially the EJ257 STI. A flex fuel sensor reads ethanol content live and the ECU adjusts fuel, timing, and boost on the fly. Fill up with 98 if E85 isn't around and the car dials itself back. Typical gains are 20-40 kW on E85 vs 98 once everything's mapped properly.
- How long is the wait between booking and a tune?
- We're usually booked out around 4 weeks for tuning. The tune itself is one day on the dyno, sometimes overnight if we're chasing finer details on the road test. Bigger builds (turbo upgrades, engine builds) run over weeks because parts need to land and the car needs the time. Get in touch with what you're chasing and we'll give you a real timeline, not a rough guess.
Got a Subaru?
Service, more power, or trying to work out where to start. We reply within 24 hours.