17/06/2026
Another STI through the workshop and this one left packing some serious punch. This 2017 WRX STI came in for one of our DG Level 3 Performance Upgrade Packages, and the results speak for themselves. We’ve given it a solid foundation for power, reliability, and future growth including:
- Turbo-Back Exhaust System – Unleashed that signature boxer rumble while improving overall flow
- Cold Air Intake – Cooler, denser air for improved performance
- Front Mount Intercooler – Keeping intake temps down under boost and consistent power delivery
But we didn’t stop there… We’ve future-proofed this build with a fuel system capable of supporting bigger power down the track. Plenty of headroom for the next stage. The factory clutch was showing its age, so we replaced it with a heavy-duty unit ready to handle the extra torque and spirited driving.
While the car was in, we also replaced the radiator after noticing the plastic top tank had started to discolour (black turning green). This is a common sign the radiator is deteriorating from the inside out — something we regularly see on factory Subaru units around the 8 to 10 year mark. Preventative maintenance here goes a long way in avoiding future issues!
To tie it all together, we finished the build with a custom in-house dyno tune using EcuTek, ensuring everything works seamlessly together. The result is smooth power delivery, improved response, and a safe, reliable setup tailored specifically to this car.
This STI is now set up to perform, sounds incredible, and handle more upgrades when the owner is ready for the next step.
Thinking about upgrading your WRX or STI? Give our team a call on 07 3245 5070 or email us at [email protected]
