Coastal drives and heavy hauls demand more than the stock-standard factory tune your diesel came with. At Willy’s Workshop, we deliver custom diesel tuning that’s fine-tuned for Sunshine Coast conditions, giving your ride stronger pull off the line, effortless control and fuel savings that go the distance.
Willy’s Workshop delivers diesel tuning Sunshine Coast drivers rely on
We’ve spent years fine-tuning diesel vehicles to run stronger and smarter, and we bring that same level of precision to every Sunshine Coast tune. Whether you’re hauling tools to a job site or chasing dirt tracks on the weekend, we tune for real-world results. And with pro-grade software and serious time behind the tools, we’ll dial in the sweet spot between grunt, economy and reliability, making sure your ride is prepped for the long run.
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What is diesel tuning?
Modern diesel engines are run by computers called ECUs—Engine Control Units. These ECUs manage nearly every aspect of how your engine runs, from when and how much fuel is injected, to controlling the turbo boost and managing the throttle response.
Diesel tuning involves reprogramming this computer to adjust those key settings. This allows you to optimise things like fuel injection timing, increase turbo boost pressure, and fine-tune throttle response to get better power, improved efficiency and a smoother driving experience.
At Willy’s Workshop, we provide a variety of expert tuning services to get the most out of your vehicle.
Multi-mapping
Switch between different tuning setups tailored for various driving conditions, giving you the perfect performance no matter where you drive.
Model Upgrades
Upgrade your engine with parts and software designed specifically for your vehicle to boost overall performance.
ECU Remapping
Fine-tune your engine to boost power, improve fuel economy and enhance throttle responsiveness.
Transmission Tuning
Smooth out gear changes and improve power delivery by fine-tuning your transmission.
Dyno Tuning
Measure and adjust your engine’s performance on a dynamometer to achieve precise power and efficiency gains.
The benefits of diesel tuning on the Sunshine Coast
At Willy’s Workshop, we specialise in fine-tuning diesel engines to get every bit of power out of them, all while making sure they can handle the Sunshine Coast’s unique mix of coastal roads and rolling hills.
Increased torque and engine output
Through ECU recalibration, we optimise fuel injection timing, boost pressure, and torque limits to deliver measurable increases in torque and horsepower. This translates to stronger acceleration, improved load pulling, and greater capability for towing caravans or trailers
Optimised fuel efficiency and combustion
Our diesel tuning refines your engine’s combustion cycle by adjusting injector pulse and air-fuel ratios, which reduces fuel consumption without sacrificing performance.
Smoother shifts and less turbo lag
We don’t just work the engine. We fine-tune transmission shift points and torque management to minimise turbo lag and deliver seamless acceleration.
Keep your engine healthy and reliable
We know performance is great, but your engine’s long-term health matters more. Our tunes boost your vehicle without pushing it too hard, so your diesel stays reliable and strong, kilometre after kilometre.
Performance Tuning Packages
At Willy’s Workshop, our diesel tuning service takes your vehicle’s performance to the next level, giving you a smoother, more responsive drive that matches how you use your vehicle every day.
Why choose Willy’s Workshop for your diesel tune?
Willy’s Workshop has built a name for solid diesel mechanics, handling everything from quick fixes to full rebuilds. We deliver quality work, on time, and at a price you can feel good about.
And we don’t just hand you the keys and disappear. If you’ve got questions or need a clear rundown of your service or invoice, we’re here to make the whole process straightforward and hassle-free. We make sure you’re in the loop and comfortable at every stage with us.
Diesel tuning experts you can rely on
At Willy’s, we’re experts at unlocking every bit of power and efficiency your engine’s got. More power, smarter fuel use and towing that feels like second nature. That’s what we bring to the table.
Your one-stop diesel service hub
Whether you’re after performance tweaks, repairs, or routine maintenance, we take care of everything right here. No more running around between garages. Just expert diesel care from start to finish, all in one place.
Straight talk from diesel professionals
We’ll explain what’s going on in plain English, not mechanic-speak. No surprises, no pressure. Expect the right advice to get your vehicle running right.
Experience that shows in every job
From the first spanner turn to the final test, we bring tried-and-true skill to every job. Because getting it right the first time is what we’re known for.
Testimonials
What our customers have to say
nick stalling
22:46 30 Mar 26
Spiteful or just negligent? Do not engage. I sent my vehicle to these guys for an engine swap, was quoted 3 weeks. 19 weeks of chasing them about it with no attempt made by Willy’s to communicate delays and I finally cracked and said give me my vehicle back. Now they won’t return my deposit and the state they returned my vehicle in is laughable. At every turn they have been dishonest and lazy. Never have I ever had a worse experience with a mechanic. Court proceedings to follow but do yourself a favour and go elsewhere.
Frostythesnowman
08:28 30 Mar 26
Would avoid them like the plague for a guy on facebook to not to have his car for 6 months and come up with every excuse under the sun to not give it back read the bad reviews and read it on Facebook they are all there
Faith Monro
00:17 29 Mar 26
Avoid Willy’s workshop.‼️
I am currently pursuing legal action in relation to this matter due to ongoing concerns around delays, losses, and how the job has been handled. I would advise avoiding this company to your own benefit.
What was presented as a straightforward engine conversion with an estimated 3-week turnaround has turned into a 5+ month ongoing issue involving delays, poor communication, misleading updates, and serious concerns around transparency, workmanship, and overall conduct.
I paid $22,500 upfront in good faith after being told work would begin once the donor vehicle arrived on 22/10/2025. From that point forward, communication became extremely inconsistent. Emails, calls, and messages would often go unanswered for extended periods, and I had to constantly follow up just to receive basic updates. Despite multiple requests, I was never provided with a clear or reliable timeline.
This situation has had a significant impact on my family. We were left without a vehicle for an extended period, which was difficult given we have a 15-month-old daughter and my partner is currently pregnant now with all this stress. A temporary vehicle was only provided after I escalated the situation due to the delays already exceeding the agreed timeframe, and there have been ongoing concerns surrounding that arrangement.
The original timeline was not met, and the job has extended well beyond what was discussed. I was repeatedly advised that progress was being made, including wiring and major components, however when attending the workshop, the vehicle often appeared unchanged for extended periods. I was also advised the donor vehicle had changed, however when I attended, the same donor vehicle was still present and being used.
I have concerns about how the vehicle has been handled. Components have been left loose and exposed, and there were instances where parts and dirty items were placed inside the vehicle interior. The vehicle has also been left outside in the weather without adequate protection, which does not reflect the level of care expected.
There were also issues regarding invoicing and payment handling. I was initially sent an invoice for the full amount instead of a deposit, and after paying $22,500 in cash, documentation and clarity around payments were limited. The invoice contains a questionable MTA reference, and payments do not appear clearly reflected. I was also advised my original engine and gearbox would be sold and credited, however there has been no documentation or confirmation of this.
The process has felt disorganised, with poor communication between locations and staff often unable to provide clear answers or updates. My vehicle was also used without my consent, resulting in toll charges.
More recently, the situation escalated further. I attended the workshop on 27/03/2026 with a witness to organise a timeline and handover due to ongoing delays and lack of transparency. At that time, there were still concerns regarding lack of progress despite prior commitments that work would be completed by 30/03/2026. During this visit there was a physical interaction while attempting to request updates and documentation, which has been recorded on both CCTV and my own device and is now being addressed through the appropriate channels.
Due to the ongoing issues, I have sought legal advice and am currently pursuing a resolution through formal processes. I have also raised concerns with relevant authorities including Queensland Police, EPA, Transport, Fair Work, and MTA regarding aspects of this experience.
This situation has caused significant stress, financial impact, and disruption to my family. Based on my experience, I would strongly recommend others proceed with caution, particularly for complex or long-term work, and ensure everything is clearly documented.
I am currently pursuing legal action in relation to this matter due to ongoing concerns around delays, losses, and how the job has been handled. I would advise avoiding this company to your own benefit.
What was presented as a straightforward engine conversion with an estimated 3-week turnaround has turned into a 5+ month ongoing issue involving delays, poor communication, misleading updates, and serious concerns around transparency, workmanship, and overall conduct.
I paid $22,500 upfront in good faith after being told work would begin once the donor vehicle arrived on 22/10/2025. From that point forward, communication became extremely inconsistent. Emails, calls, and messages would often go unanswered for extended periods, and I had to constantly follow up just to receive basic updates. Despite multiple requests, I was never provided with a clear or reliable timeline.
This situation has had a significant impact on my family. We were left without a vehicle for an extended period, which was difficult given we have a 15-month-old daughter and my partner is currently pregnant now with all this stress. A temporary vehicle was only provided after I escalated the situation due to the delays already exceeding the agreed timeframe, and there have been ongoing concerns surrounding that arrangement.
The original timeline was not met, and the job has extended well beyond what was discussed. I was repeatedly advised that progress was being made, including wiring and major components, however when attending the workshop, the vehicle often appeared unchanged for extended periods. I was also advised the donor vehicle had changed, however when I attended, the same donor vehicle was still present and being used.
I have concerns about how the vehicle has been handled. Components have been left loose and exposed, and there were instances where parts and dirty items were placed inside the vehicle interior. The vehicle has also been left outside in the weather without adequate protection, which does not reflect the level of care expected.
There were also issues regarding invoicing and payment handling. I was initially sent an invoice for the full amount instead of a deposit, and after paying $22,500 in cash, documentation and clarity around payments were limited. The invoice contains a questionable MTA reference, and payments do not appear clearly reflected. I was also advised my original engine and gearbox would be sold and credited, however there has been no documentation or confirmation of this.
The process has felt disorganised, with poor communication between locations and staff often unable to provide clear answers or updates. My vehicle was also used without my consent, resulting in toll charges.
More recently, the situation escalated further. I attended the workshop on 27/03/2026 with a witness to organise a timeline and handover due to ongoing delays and lack of transparency. At that time, there were still concerns regarding lack of progress despite prior commitments that work would be completed by 30/03/2026. During this visit there was a physical interaction while attempting to request updates and documentation, which has been recorded on both CCTV and my own device and is now being addressed through the appropriate channels.
Due to the ongoing issues, I have sought legal advice and am currently pursuing a resolution through formal processes. I have also raised concerns with relevant authorities including Queensland Police, EPA, Transport, Fair Work, and MTA regarding aspects of this experience.
This situation has caused significant stress, financial impact, and disruption to my family. Based on my experience, I would strongly recommend others proceed with caution, particularly for complex or long-term work, and ensure everything is clearly documented.
Hien Chiem
00:17 28 Mar 26
Good service
Ben Cooper
08:36 19 Mar 26
These guys are great. Called them up about my subaru diesel with an issue and they explained it and had it turned around and all sorted in a matter of days. Highly recommend.
Peter Martin
00:10 16 Mar 26
I put my Ute in to get the cams sensors done found out the cams were worn that was fair enough so I said do the cams and timing chain this was Nov 2025 was told the block was ok has it had good compression then I was told it needed a full rebuild in Dec 2025 I was never given a quote for the work then last week early march 2026 I was told it’s going to cost over $17000 to fix it and they still have not started the rebuild I rang many times about the car they say they will find out about it then they will call back but I’ve only had one call back ever
Kenz
19:52 15 Mar 26
They admitted they accidentally shorted out my Mercedes ECU when they were trying to work out the fault with the vehicle. They fitted another secondhand one for free, which I thought they should. But then charged me $1100 to tune the ECU to match my car. That I believe is wrong & I shouldn't have had to pay for. But I was made to pay. Couldn't take my vehicle without paying. Original problem wasn't resolved either. NEVER going back.
Jay Black
01:04 01 Mar 26
Straight talk by Andrew… friendly… booked in sooner than I expected… excellent price for the service… job was completed promptly… very happy with the result… I highly recommend ‘Willy's Workshop’, Warana…
Pat rock
19:23 14 Feb 26
Mercedes Sprinter. Turbos replaced, ECU replaced, ECU tuned, battery replaced. 16 times returned to fix it from going into limp mode. $8,920 out of pocket. Took it elsewhere. Fixed with a $80 waste gate vacuum valve! Willys had no idea how to fix it. Made contact 3 times after with Willys...washed their hands of it. I refitted old turbos, as nothing wrong with them and sold new turbos to gain some costs & to prove Willys are a disgrace.
Jonathan Bonney
10:09 10 Feb 26
Beware Beware Beware!
Very disappointed with the work done on my car. It went in to fix a coolant leak and tune and was returned to me with a hole in the radiator and slashes to my steering wheel. After the radiator was repaired, fuel was spraying all over the engine bay. Now the original work is leaking coolant. My wife has been stranded on the Kawana Way twice with low coolant warnings less than 3 minutes after picking up the vehicle.
The tune is great!
Even though I was promised that the steering wheel would be repaired this hasn’t happened. In addition, I was told a radiator from Audi was $2900 however when I called Audi an OEM radiator from Audi was $900 retail, I was charged $1100 for an aftermarket one.
The most disappointing was the communication, with lie after lie being told. My wife was told to “sell the car and get a Camry if you’re worried about the cost.”
DO NOT TRUST these people and don’t allow them to work on your car.
I have given them ample opportunity to address these issues but there has been no willingness to rectify the problems. $6000 plus later I am paying Audi to fix the car.
You have been warned. Please don’t do this to yourself.
Very disappointed with the work done on my car. It went in to fix a coolant leak and tune and was returned to me with a hole in the radiator and slashes to my steering wheel. After the radiator was repaired, fuel was spraying all over the engine bay. Now the original work is leaking coolant. My wife has been stranded on the Kawana Way twice with low coolant warnings less than 3 minutes after picking up the vehicle.
The tune is great!
Even though I was promised that the steering wheel would be repaired this hasn’t happened. In addition, I was told a radiator from Audi was $2900 however when I called Audi an OEM radiator from Audi was $900 retail, I was charged $1100 for an aftermarket one.
The most disappointing was the communication, with lie after lie being told. My wife was told to “sell the car and get a Camry if you’re worried about the cost.”
DO NOT TRUST these people and don’t allow them to work on your car.
I have given them ample opportunity to address these issues but there has been no willingness to rectify the problems. $6000 plus later I am paying Audi to fix the car.
You have been warned. Please don’t do this to yourself.
kurt calleja
22:34 30 Jan 26
Awesome place! Really good quality work.
My car had various gaskets, turbo and other stuff replaced by these guys and 2 years later its still all perfect.
My car had various gaskets, turbo and other stuff replaced by these guys and 2 years later its still all perfect.
Craig Peebles
10:05 29 Jan 26
Anthony at Warana displayed excellent knowledge and explained the process well.
Invoiced as quoted even though the job took longer than expected due to rusted nuts.
I offered to pay more but he declined.
Extremely pleased with the overall experience.
Top work!
Invoiced as quoted even though the job took longer than expected due to rusted nuts.
I offered to pay more but he declined.
Extremely pleased with the overall experience.
Top work!
Need reliable performance that sticks around? Contact us today and let’s fine-tune your ride!
FAQs
Got questions about diesel tuning on the Sunshine Coast? We’ve tuned it all, from beach rigs to tow beasts, and these FAQs cover what you need to know.
Can you remap diesel utes for Sunshine Coast beach driving?
You bet! We can optimise your diesel tune for the unique demands of beach driving, whether it’s soft sand at Double Island or long stretches near Noosa North Shore. We fine-tune for better low-end torque and instant pedal response, so you won’t be left bogged or over-revving.
Will my tuned vehicle be suited for mountain drives to Montville or Maleny?
Absolutely. We can tune your diesel for smoother gear shifts, stronger uphill pulls and more control on descents, perfect for tackling winding climbs or weekend trips through the Hinterland.
Is diesel tuning safe for towing caravans or trailers through Sunshine Coast hills?
Yes — when done right. Our custom tunes improve torque delivery and engine efficiency under load, making it safer and easier to tow up steep inclines like Obi Obi Road or Bald Knob Range.
How does diesel tuning affect fuel economy on Sunshine Coast highway runs?
With the right tuning, you’ll likely see improved fuel efficiency, especially during consistent cruising along the Bruce Highway or Sunshine Motorway. Power where it counts, efficiency where it matters.
Can you adjust my tune for different driving styles — like weekday commuting vs weekend getaways?
Absolutely! we can customise your tune based on how and where you drive. From daily runs through Maroochydore traffic to long hauls out past Gympie, we’ll set your diesel up to perform how you need it to.
Can you retune after I add other upgrades like an exhaust or snorkel?
Definitely. In fact, a re-tune is often needed to get the most from new mods. Whether you’re adding an aftermarket intercooler, snorkel, or full exhaust system, we’ll recalibrate to make sure everything is firing on the same wavelength.
Still have questions?
Articles & Resources
Looking for more info? Check out our articles and resources on Diesel Tuning or get in touch. Our team are on hand to answer your questions.
Get a quote
We’re here to help you with any inquiries.
Get in touch
Our Locations
Sunshine Coast
P: (07) 5619 7869
Text us : 0485 885 957
E: [email protected]
12 Commerce Ave, Warana, 4575
Customer Service Opening Hours:
Monday to Friday – 7:00 AM to 5:00 PM
Brisbane
P: (07) 3377 3421
Text us : 0485 885 957
E: [email protected]
291 Cliveden Avenue, Oxley, 4075
Customer Service Opening Hours:
Monday to Friday – 7:00 AM to 5:00 PM
