Diesel Tuning Adelaide
Professional ECU Remapping & Performance Tuning for 4WD Diesel Vehicles
Tuning With Peace of Mind
Salisbury, Adelaide
At Stealth Installs, we understand that most of our customers aren't after the absolute limit of what their engine can do. They want a tune that delivers real-world gains — improved throttle response, better efficiency, and a vehicle that feels strong and composed — without sacrificing the reliability they depend on every day.
That's exactly what we provide. Every vehicle gets a thorough once-over, we keep you informed every step of the way, and we'll always recommend what we believe is the best solution — but ultimately, we work around your needs and your budget.
Leave your vehicle in safe hands. We'll bring it back to you better than before.
Real Power and Torque Gains
Unlock significant horsepower and torque gains for better acceleration, towing capacity, and overall performance.
Improved Fuel Economy
Optimized engine mapping reduces fuel consumption by up to 15%, saving you money on every journey.
Enhanced Drivability
Smoother power delivery, reduced turbo lag, and improved throttle response for a more enjoyable driving experience.
Honest Warranty Advice
We'll talk you through how a tune could affect your new-vehicle warranty before we start, so you decide with the facts. Every tune includes a free return to your original factory software for 2 years.
Free return to stock software for 2 years
Every tune includes a free return to your original factory software for 2 years.
Our Diesel Tuning Services
Custom ECU Remapping
Dyno Testing & Analysis
Fault Code Diagnosis
EGR Diagnosis, Cleaning & Repair
DPF Health Checks, Regeneration & Repair
Turbo Upgrades
Intake & Exhaust Optimization
Post-Tune Diagnostics
What is Diesel Tuning?
Diesel tuning, also known as ECU remapping or chip tuning, is the process of modifying your vehicle's engine control unit (ECU) to optimize performance, fuel efficiency, and drivability. At Stealth Installs, we use advanced dyno testing and professional tuning software to unlock your diesel engine's true potential.
Unlike generic mail-order tunes, every Stealth Installs tune is custom-tailored to your specific vehicle and driving requirements. We don't just flash a generic file – we thoroughly assess your vehicle, perform comprehensive diagnostics, and create a bespoke tune that maximizes performance while maintaining reliability.
Our dyno-testing facility allows us to measure real-world performance gains, ensuring you get the power, torque, and fuel economy improvements we promise. Whether you're towing heavy loads, heading off-road, or just want better daily drivability, we tailor the tune to your needs.
Real Results
Toyota Landcruiser 70 Series
1VD-FTV 4.5L V8 Single Turbo Diesel
Power Gain
Torque Gain
Fuel Economy
The 70 Series 1VD-FTV is one of our most tuned platforms. Toyota left significant headroom in the factory calibration — our custom remap transforms this workhorse, delivering huge gains in both power and torque for towing, touring, and overtaking. These results require aftermarket modifications to be achieved.
EGR Cable vs. Proper ECU Calibration
Many aftermarket EGR cables are marketed as a quick and inexpensive way to stop EGR operation. However, it's important to understand that an EGR cable doesn't actually reprogram your vehicle's ECU. Instead, it works by modifying or simulating electrical signals so the ECU believes the EGR system is operating as expected.
While this can prevent the EGR valve from functioning in some applications, the ECU is still running its original factory calibration. It continues to make engine management decisions based on the assumption that EGR operation is occurring, even when it isn't. On some vehicles, this can result in less refined drivability, reduced optimisation, or fault codes if the ECU detects inconsistencies through its other sensors.
A professional ECU calibration takes a different approach. Rather than attempting to trick the ECU, the engine management software is recalibrated so the control strategy matches the intended operating configuration. This provides a more integrated solution than relying on an external signal-modifying device.
At Stealth Installs, we believe in using the correct engineering approach for every vehicle rather than relying on shortcut solutions.
*Please note: Modifications to emissions control systems may not be legal for use on public roads and are subject to Australian laws and regulations.
What Is ECU Benching and Why Is It Sometimes Required?
Not every vehicle can be tuned through the diagnostic (OBD) port. Many modern vehicles, trucks and commercial platforms are fitted with ECUs that have advanced security measures designed to prevent unauthorised access.
In these cases, the ECU must be removed and connected directly to specialised equipment in a process known as ECU benching or bench unlocking.
Learn More
Get Your Tuning Quote
Fill out the form below and we'll get back to you with a competitive quote for your diesel tuning needs.
Request a quote
Frequently Asked Questions
Most diesel tunes take between 3-5 hours depending on the package selected. This includes initial diagnostics, dyno testing, ECU remapping, post-tune verification, and final road testing. We typically require your vehicle for the day, with some vehicles requiring drop-off the night before for the following day.
At Stealth Installs, we use professional tuning methods backed by 30+ years of experience. Our tunes are designed to work within safe engine parameters. However, we recommend checking with your vehicle manufacturer regarding their warranty policy on ECU modifications.
Power gains typically range from 15-30% increases in both power and torque. We provide detailed estimates based on your vehicle model, though individual results may vary slightly depending on engine condition and environmental factors. We'll give you a comprehensive understanding of the expected performance improvements for your specific vehicle.
Yes, we can return your vehicle to factory settings at any time. We keep a backup of your original ECU file for this purpose. As part of your 24 months software support, we can return your vehicle to factory settings at no cost during this period.
No modifications are required for our standard tunes. However, for extreme performance packages, we may recommend supporting modifications like upgraded intercoolers or exhaust systems for optimal results.
We tune all major diesel 4WD vehicles including Toyota Landcruiser, Hi-Lux, Nissan Navara, Ford Ranger, Mazda BT-50, Isuzu D-max & MU-X, VW Amarok, Mitsubishi Triton, and many more. Check if your vehicle is tunable →