Tune your diesel.
Keep your peace of mind.
Every custom dyno tune and performance upgrade at UDT is backed by our written warranty. Real coverage. Real protection. From the workshop that’s been doing this for 10 years.
- 10 Years Tuning Diesels
- Nation wide
- 24-Hour Quote Response
-What's covered
A warranty that actually
means something.
Cheap tunes and online file resellers leave you on your own when something goes wrong. We don’t. Here’s exactly what the UDT Warranty covers.
Your Tune
Every custom dyno tune is covered. If anything related to our calibration causes an issue, we make it right — no arguing, no fine print games.
Parts We Install
Intercoolers, turbos, exhausts, catch cans, clutches — anything we supply and fit is covered by our warranty in addition to the manufacturer's.
Workmanship
Our installs are done in-house by qualified diesel technicians. If our workmanship is ever the cause, we own it.
Australia-Wide Support
Three workshops across QLD and VIC. Travelling? Touring? We back our work from Brisbane to Melbourne — and everywhere in between.
10+
Years in Diesel
3
UDT Workshopts
25,000+
Diesels tuned
24hr
Quote response
- How it works
From quote to covered.
In four steps.
No hidden conditions. No “you’ll have to come back to us in Melbourne.” Just real coverage from a real workshop.
Get a Quote
Tell us your vehicle and what you want fixed. We respond inside 24 hours with real numbers.
Book Your Tune
Drop in at Geebung, Arundel or Dandenong. We tune on our in-house dyno, individually for your vehicle.
Drive It Home
Leave with a written warranty document covering your tune, parts and workmanship from day one.
We've Got You
If anything ever feels off, you call us. We diagnose. We fix it. That's the whole promise.
- Real Customers
10 Years of tuned diesels.
Don’t take our word for it. Here’s what UDT customers say after the tune — and after the warranty kicks in.
"Had an issue on the first tune after a few days of driving. UDT were more than happy to get it back and ended up doing a full new tune which is perfect. Tow 3 tonne daily with a large builders trailer — the tune is just more power but smoother."
James N.
Ford Ranger V6 - Feb 2026
"After the tune I drove from Toowoomba to Gladstone over some hilly country. RPM has dropped by 700-800rpm and fuel economy went down by 3L per hundred. If you're thinking about getting tuned by these blokes, don't think anymore."
Peter E.
Mazda BT-50 - Sep 2025
"The professionalism of the guys at UDT is amazing. Their work is faultless. The gains on my brand new MU-X are outstanding — it tows completely different and with ease."
Beau H.
Isuzu MU-X - Jul 2025
- Common Questions
Everything you'd ask before signing.
In most cases, the factory warranty only applies to components affected by the modification. Our team will walk you through exactly what changes, what stays untouched, and how the UDT Warranty backs the bits we touch. We’ve been having this conversation for 10 years.
Warranty period depends on the service or part. Your final quote includes the exact written terms before you book — no fine print discovered after the fact.
Yes. All three UDT workshops honour the warranty. If you tuned in Geebung and you’re touring through Victoria, Dandenong’s got you. Same workshop standards, same equipment, same crew ethos.
The UDT Warranty only covers tunes and parts installed by us. Generic / “load & go” tunes aren’t customised to your vehicle — which is why we won’t put our name on them. We can re-tune your vehicle properly and bring it into our warranty.
Within 24 hours, every time. No more “we’ll get back to you in a few days.” That’s the new UDT standard.