The Territory's Just Autos Distributor
Unlock the full potential of your diesel.
Serious power. Serious towing. Serious reliability. Just Autos builds the country's toughest diesel performance packages, and Weirys Diesel & Mechanical Services is the Territory's authorised workshop trusted to fit them.
We take a complete-vehicle approach to performance upgrades. Before recommending modifications, consideration is given to vehicle condition, intended use, towing requirements and supporting mechanical components. Whether the vehicle is used for touring, towing, work or recreational 4WD use, our aim is to provide a package appropriate for how the vehicle is actually used.
We take a complete-vehicle approach to performance upgrades. Before recommending modifications, consideration is given to vehicle condition, intended use, towing requirements and supporting mechanical components. Whether the vehicle is used for touring, towing, work or recreational 4WD use, our aim is to provide a package appropriate for how the vehicle is actually used.
Check out the video - WEIRYS X JUST AUTOS DISTRIBUTOR
HARDWARE
Performance hardware that holds nothing back
Turbo & Injectors
Exhaust Systems
Transmission Lock-Up Kits
Airbox Upgrades
Heavy-Duty Clutches
Heat Exchangers
Software
Tuning, remapping & multi-mapping.
Calibrated for real Territory driving, heat, load, distance and the roads in between.
ECU Remapping
Unleash real power and torque with zero hardware changes, a smoother, more responsive drive from the moment you leave the workshop.
Multi-Mapping
Switch between custom performance profiles from your existing cruise control switch. Towing, touring or off-road — one truck, every mode.
Why Just autos + Weirys Diesel & Mechanical Services
Diesel performance isn't just what we do. It's what we know.
Every vehicle is treated like our own - tailored packages, transparent advice, and a commitment to reliability that lasts long after you leave the workshop. No shortcuts. No guesswork. Just results that hold up on Territory roads.
And as the NT's authorised Just Autos distributor, every package sold locally is fitted right here at Weirys — by technicians trained on the range, backed by warranty, backed by us.
And as the NT's authorised Just Autos distributor, every package sold locally is fitted right here at Weirys — by technicians trained on the range, backed by warranty, backed by us.
Recent Builds
Fitted at Weirys.
