Down under diesel tuning

Down under diesel tuning Tuning | Exhausts | Turbos | Clutches
Toyota & American Truck Specialists
Ben Bullen, NSW
Improve power & efficiency

At Down Under Diesel Tuning, we are passionate about optimising the performance and efficiency of diesel engines. Our team of highly skilled technicians is dedicated to providing top-notch tuning solutions that enhance the power, torque, and fuel efficiency of your vehicle. We have worked with a wide range of diesel vehicles, including cars, trucks, SUVs, and commercial vehicles, and have a deep u

nderstanding of the intricacies of diesel engine tuning. Our 20 years of industry experience have allowed us to refine our tuning processes and techniques, ensuring that we always deliver exceptional results to our valued customers. We stay up-to-date with the latest advancements in diesel technology and continually invest in state-of-the-art diagnostic tools and equipment to provide you with the best possible tuning solutions.

13/06/2026

We don't just install plug-and-play tunes and hope for the best.

Every tune is written by us and is fully customisable.

If you're after a real tune by real professionals, we're only a phone call away.

๐Ÿ“ž Call: 0423 744 994
๐Ÿ“ง Email: [email protected]
๐Ÿ•’ Open Monโ€“Fri: 9:00 AM โ€“ 5:00 PM

79 Series fleet vehicle in for a custom remap ๐Ÿ“ˆA good increase in power & torque will not only make for a smoother drive...
04/06/2026

79 Series fleet vehicle in for a custom remap ๐Ÿ“ˆ

A good increase in power & torque will not only make for a smoother drive, but will lead to some light fuel consumption savings as well ๐Ÿ’ช

- 34% increase in kW
- 88% increase in Nm

๐Ÿ“ž Call: 0423 744 994
๐Ÿ“ง Email: [email protected]
๐Ÿ•’ Open Monโ€“Fri: 9:00 AM โ€“ 5:00 PM

The old International revival is still in progress ๐Ÿ’ชTest fitting the 6.7L Cummins donor motor.700hp+ rat-rod coming to a...
02/06/2026

The old International revival is still in progress ๐Ÿ’ช

Test fitting the 6.7L Cummins donor motor.

700hp+ rat-rod coming to a road near you soon ๐Ÿ”ฅ

A new 79 Series Cruser in for a clutch, tune & exhaust ๐Ÿ”ฅ128.3kW โžก๏ธ 158.3kW (23% increase)453Nm โžก๏ธ 748Nm (65% increase)Po...
29/05/2026

A new 79 Series Cruser in for a clutch, tune & exhaust ๐Ÿ”ฅ

128.3kW โžก๏ธ 158.3kW (23% increase)
453Nm โžก๏ธ 748Nm (65% increase)

Power gains + increased fuel efficiency... it's a no-brainer.

This BT-50 came in for a custom ECU remap...Before: 102.7 kW / 414 NmAfter: 125.8 kW / 499 NmNice, solid gains and a muc...
27/05/2026

This BT-50 came in for a custom ECU remap...

Before: 102.7 kW / 414 Nm
After: 125.8 kW / 499 Nm

Nice, solid gains and a much cleaner, smoother-running BT .

If your ute's feeling a bit sluggish, bring it in for a quick remap ๐Ÿ’ช

๐Ÿ“ž Call: 0423 744 994
๐Ÿ“ง Email: [email protected]
๐Ÿ•’ Open Monโ€“Fri: 9:00 AM โ€“ 5:00 PM

22/05/2026

SLUGGISH TOWING... GONE โŒ

My 79-Series LandCruiser needed to haul the boat and buggies up hills without getting hot.

Obviously, we gave it the full Down Under Diesel treatment so it can get the job done without breaking a sweat.

๐Ÿ› ๏ธ The Hardware: Garrett Stage 3 Turbo, 8HP 8-speed Auto Conversion, Stage 3 Intercooler, and a 4-inch Redback Exhaust.

๐Ÿ’ปThe Custom Tune: Kept conservative for bulletproof reliability when towing heavy.
Power: 189.6 kW | Torque: A massive 746 Nm
Safe 24.4 PSI boost & clean 29.7:1 AFR

The Result: The perfect all-rounder. Drives a hell of a lot better, won't overheat as easily, and a bit better on fuel too.

Don't trust a cheap plug-in chip on your ute that you've poured money into.
Weโ€™ve got over 20 years of experience making diesels do exactly what they were meant to do.

๐Ÿ‘‡ Give us a call to get you sorted.
๐Ÿ“ž 0423 744 994

Another case of big gains from a simple Clutch + Tune + Exhaust package; this time for a Hilux ๐Ÿค122.2kW โžก๏ธ 155.8kW (27% ...
19/05/2026

Another case of big gains from a simple Clutch + Tune + Exhaust package; this time for a Hilux ๐Ÿค

122.2kW โžก๏ธ 155.8kW (27% increase)
360Nm โžก๏ธ 575 Nm (60% increase)
..and better fuel economy.

That's what you get when you take your ute to people who actually know what they're doing.

Get in touch, let's get you driving properly ๐Ÿ’ช

This 79 Series recently rolled in for a custom ECU remap & exhaust upgrade.The result? 159.9kW & 683Nm at the wheels...T...
13/05/2026

This 79 Series recently rolled in for a custom ECU remap & exhaust upgrade.

The result? 159.9kW & 683Nm at the wheels...

That's a 23% increase in power (kW) and a 69% increase in torque ๐Ÿ“ˆ

The power of a remap and exhaust upgrade can't be ignored ๐Ÿ’ช

Turbos, tunes, exhausts, clutchesโ€ฆ we do it ๐Ÿ‘ŒNo guesswork, just setups that drive better, pull harder, and handle real w...
22/04/2026

Turbos, tunes, exhausts, clutchesโ€ฆ we do it ๐Ÿ‘Œ

No guesswork, just setups that drive better, pull harder, and handle real work ๐Ÿ’ช

Keen to get your rig sorted?

๐Ÿ“ž Call: 0423 744 994
๐Ÿ“ง Email: [email protected]
๐Ÿ•’ Open Monโ€“Fri: 9:00 AM โ€“ 5:00 PM

Nothing beats a good Cruiser getting the attention it deserves ๐Ÿ‘ŒFrom underneath on the tools to dialling it in properly,...
16/04/2026

Nothing beats a good Cruiser getting the attention it deserves ๐Ÿ‘Œ

From underneath on the tools to dialling it in properly, itโ€™s all about doing the job right from start to finish. ๐Ÿ› ๏ธ

No shortcuts, just solid setups built to handle real power, real work, and real Aussie conditions ๐Ÿ’ช

Address

3076 Castlereagh Highway
Ben Bullen, NSW
2790

Opening Hours

Monday 9am - 5pm
Tuesday 9am - 5pm
Wednesday 9am - 5pm
Thursday 9am - 5pm
Friday 9am - 5pm

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