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Emission Control Systems Servicing, Maintenance & Repair

As environmental regulations tighten, diesel emission systems have become mandatory on all new diesel vehicles. Unfortunately, these new systems can cause a host of problems for end users, requiring regular maintenance to operate efficiently and in some cases, malfunctioning, causing the vehicle to go into pesky ‘limp-mode’.

At Willy’s, we get to the core of emission issues, making sure your engine runs cleaner, works smarter, and stays fully compliant. With us, you’ll enjoy better fuel economy, reduced emissions, and a smoother ride.

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Emission Control Systems

If you’ve lost power, found your diesel to be thirstier than usual or had your vehicle enter ‘limp’ mode, chances are there’s a problem with emissions system, specifically, your DPF, EGR or Ad Blue system. When this occurs, you’ve got a couple of options.

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DPF Cleaning

DPF’s typically gets blocked after approximately 60,000 km, which decreases vehicle performance and raises fuel consumption. The most effective solution for a clogged DPF filter is to have it cleaned professionally.

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DPF Replace

Replacing your DPF increases performance and improves fuel efficiency while keeping your vehicle compliant. Find out more below or get in touch to discuss your options.

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DPF & EGR Delete

A DPF Delete is where where the Diesel Particulate Filter (DPF) is completely removed. We then tune the ECU to function without it. **This service is offered on off-road unregistered track vehicles only.** Find out more below.

Why Emissions System Maintenance Matters

Emissions system maintenance is key to keeping your diesel running clean, powerful, and at its best. Regular servicing ensures peak performance, reduces pollution, and keeps you compliant with regulations.

Skip it, and you risk costly repairs and unnecessary downtime. With checks every 10,000 miles or 6 months, our team catches issues early – saving you both time and money.

Neglecting your emissions system can cause major damage, higher emissions, and even compliance headaches. That’s why we offer proactive solutions, including fuel filter replacements, DPF safe oil at services and DPF deletes, to keep your diesel running smoothly and reliably.

From selective catalytic reduction to diesel exhaust fluid, every component matters in your engine’s performance. At Willy’s Workshop, we focus on the details that keep your diesel strong, helping you avoid costly fixes down the road.

DPF Delete, Repair & Replace
Emission Control Systems

What is a DPF Delete?

A DPF Delete involves removing the Diesel Particulate Filter (DPF) from your engine’s exhaust system, then tuning the ECU to operate without the filter. The DPF is designed to catch soot and harmful particles in your diesel’s emissions, helping to keep your engine clean and meet regulations.

Over time, the DPF can get clogged up, reducing your engine’s performance and even causing problems with regeneration cycles. That’s where a DPF Delete steps in. It removes the filter and recalibrates your engine to run smoother and more efficiently. Please note, this service is only available on off-road vehicles. **Not all modifications are road legal, please check your state’s legislation for more info.**

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Maximise engine power

At Willy’s Workshop, we specialise in optimising your off-road vehicle’s performance through expert engine recalibration, along with diagnosing and repairing pesky issues for a fraction of the cost. With improved airflow and precise tuning, you’ll enjoy faster acceleration, greater power, and a smoother, more responsive ride.

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Save big on repairs

With years of experience of fixing these costly systems, ensure you get it fixed right the first time. Don’t spend $10,000+ at the dealer. We Can diagnose, maintain and effectively repair the systems eliminating costly DPF issues like blockages, failed regenerations, and sensor failures so your diesel runs strong and trouble-free.

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Boost power & cut fuel costs

Ready to save on fuel? By fine-tuning your engine and remapping your vehicle effectively, we reduce backpressure and improve combustion efficiency giving you more power, better mileage, and lower fuel costs.

EGR Repairs & AdBlue Repairs

The DPF, EGR and AdBlue are solutions designed to reduce emissions. Unfortunately, these systems suffer similar problems, leading to poor performance, endless regen cycles, and higher fuel use. At Willy’s, we clear the blockages with expert diagnostics and cleaning, so your engine runs clean and efficient.

EGR Repair
The biggest cause of EGR failure is the buildup of carbon from the exhaust, leading to clogged tubes and eventually causing the valves plunger mechanism to jam. In these instances, we’ll diagnose the cause of the problem, clear blockages and replace the valve — always using OEM parts or better.

AdBlue Repair
Faulty sensors, bad fluid, or system glitches can lead to poor performance or error codes. We recalibrate and repair your AdBlue system to keep your diesel in reliable condition, so you can keep your focus where it’s needed most.

EGR Repairs & AdBlue Repairs

Vehicles We Tune

cars

Cars

4x4s

US Trucks

US Trucks

Trucks

Trucks

Equipment

Equipment

Marine

Marine

Why trust your diesel with Willy’s Workshop?

Tired of your diesel struggling with blocked filters, poor fuel efficiency, or endless regen cycles? Too many mechanics throw in quick fixes that don’t last, leaving you with the same headaches down the road.

At Willy’s, we don’t do half-measures. We get the job done right the first time. Whether it’s cleaning, replacing or deleting, we provide solutions that work. Ensuring your emissions system is built for long-term performance.

With expert craftsmanship, fast turnaround, and solutions that last, we keep your engine running cleaner, stronger, and exactly how it should.

willys workshop team

Testimonials

What our customers have to say

"Sorted out issues with my Ford Everest"

The guys at Willy's sorted out issues with my Ford Everest. Friendly staff and fast turnaround, couldn't recommend them enough

L Luke
"Chose Willys workshop to do a tune and service on my Range Rover Evoke"

New to the coast and chose Willys workshop to do a tune and service on my Range Rover Evoke. Couldn't be more impressed with the workmanship from the guys. More power and better fuel economy, great staff and will continue to use. Highly recommend

L Luke
"Sorted out issues with my Ford Everest"

New to the coast and chose Willys workshop to do a tune and service on my Range Rover Evoke. Couldn't be more impressed with the workmanship from the guys. More power and better fuel economy, great staff and will continue to use. Highly recommend

L Luke
"Sorted out issues with my Ford Everest"

The guys at Willy's sorted out issues with my Ford Everest. Friendly staff and fast turnaround, couldn't recommend them enough

L Luke
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4.8
Based on 141 reviews
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ACg8ocLhPQNVzsmKolGLWPPtNXaXJqWoCnZtB2OtfFTJQexPtHQdkg=s56 c0x00000000 cc rp moBrett M
06:45 04 Apr 25
Great service very smart team got my dpf problem sorted on my ranger in no time thanks .
ACg8ocLjp43xiCwztyy6HNMZGiy6ufWCSQlLzfoJP LjXMA3R7bVdw=s56 c0x00000000 cc rp moSarah Giammarco
06:44 04 Apr 25
Awesome work guys! Thanks
ACg8ocKc2dKQfoeJRYpOtcouJFm5IMwrvWBRgzP8HjMWKHcCIg i9A=s56 c0x00000000 cc rp moAndy M
06:48 18 Mar 25
I wouldn’t bring my mower here after my experience. I came with my Ford Ranger after Ford dealer quoted me 3k for a new ECU arguably not covered under warranty. Andrew told me they need to do they own diagnostic which would cost $140 before proceeding which I agree too.Two days later I came to the shop to check on the progress to find out my car wasn’t there but at some auto election shop for further diagnostics. While waiting for my car I was told it’s definitely not ECU but crank shaft and timing belt not syncing and most likely I would need a new engine. Anthony sounded super confident about it. In 30 min wait my car arrived with a bill of $1485 from auto election diagnostics plus $140. After back and forth I refused to pay $1485 as no one called me to ask for permission for more advanced diagnostics. I ended up paying $140 for I don’t know what exactly, as they refused to give me any paperwork.In the end I took my car next day to different Ford Dealer who whin couple of hours found damaged crank sensor wire rubbing on diff hose. All got fixed under warranty.Imagine if I listened to Anthony and end up putting a new motor!! How many people accept their “diagnostic” and needlessly spends thousands of dollars.
ACg8ocJ2fcgjCsoelSCnnrFm2ObY1pOAFxwbfpwYbVXJHsPdH7mPSg=s56 c0x00000000 cc rp moLeunis Kruger
21:09 06 Mar 25
Thanks Andrew, Great service and advice.
ALV UjUZ4JKuysQvNL0S CaBwxIRrH y8Dp1SpW3z5jf5jgWhvNN9Vgl=s56 c0x00000000 cc rp moLyn Mccrostie
23:09 19 Feb 25
We were both very impressed with the thorough diagnostic approach (not just with diagnostic equipment) but with searching physically ,to resolve the difficult problems with our vehicle, that had been looked at by other mechanics but unresolved.We very much appreciate the effort of Willy and Doug and their expertise.
ALV UjVrGlumWKufqDuPh3MUUoSENyr2KL eeWJEP29W6nIwQT7r8F0=s56 c0x00000000 cc rp mo ba3MrTristram27
08:57 06 Feb 25
Great service done and excellent knowledge based advice! Can’t wait for completion of the stage 1
ALV UjWCvFD9nUG9Jq6e0gb90ZZNcr47QHROyBJQRwZ7taBM7cgV6nKp=s56 c0x00000000 cc rp moDavid Abel
08:43 06 Feb 25
First I found your willingness to help me sort out another mechanic mess was second to nun I called at 630 am u guys said I'll see you soon that afternoon I had my jcar back fixed running like new thank guys 👦
ACg8ocJnB0h GuLrteqPdf93Ympp6fJq50wpSkYqmiDC3Q2ynbjEgg=s56 c0x00000000 cc rp mohoward dunglison
01:11 24 Jan 25
I took my f250. With a problem and the boys solve the problem in two days very impressed
ALV UjVlmLlUhAwkrS5kfxpeQm5w22le OxBRWETAxlV16wooM9tsUc=s56 c0x00000000 cc rp moMurray Lloyd Music
10:00 15 Jan 25
Isuzu truck/ Avida motorhome performance tune. Anthony was very knowledgeable and helpful, answered all my questions and I am looking forward to driving the truck with more power and torque
ALV UjW7JsguyEwI165NERV0D3QlkkbNESIJh4t24gQm UN8Gzep78U0=s56 c0x00000000 cc rp moJayson Butt
01:15 10 Jan 25
The guys here are second to none ... If you car about your car and want that same care from your mechanic then go here ...you won't do better ✌️
ACg8ocIr9Wirb0vCToI0bNdf7LIsFf8 Md65js9CkkX5o0JQt6wMVA=s56 c0x00000000 cc rp moJaime-lee Maybury
00:42 09 Jan 25
Took my car in for a park break diagnostic. The guys were honest, reliable and efficient. We will be back!
ACg8ocK08cjkqPbMtixOxHm2gC NruY3hvjzpOJeNhhZmr5a I4DCQ=s56 c0x00000000 cc rp moGlenn Dunstan
02:26 08 Jan 25
What an awesome place to have work done to your car. Excellent. Anthony you’re such a knowledgeable person and ever so helpful and informative. Highly appreciated and recommend Willys to anyone wanting work done on cars etc. well done.
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Don’t let emissions issues slow you down—contact us now for the upgrade your diesel deserves!

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FAQs

Got questions about emissions solutions? We’ve got the answers! Check out our FAQ section to learn how we can help your diesel run cleaner, stronger, and more efficiently with our expert emissions upgrades.

What is the purpose of an emission control system?

An emissions control system keeps your diesel’s emissions in check, reducing harmful pollutants like soot and NOx, and ensuring your engine stays compliant with regulations. It helps your engine breathe easier, run cleaner, and deliver better performance without hurting the environment.

What are the benefits of emission control for heavy duty vehicles?

For heavy-duty vehicles, having a solid emissions control system isn’t just about compliance – it’s about boosting performance and saving you money in the long run. Cleaner emissions mean fewer problems with your engine, better fuel efficiency, and a longer lifespan for your vehicle.

How does emission control work on a heavy-duty vehicle?

In a heavy-duty vehicle, the emissions control system works by trapping and neutralising harmful particles before they hit the air. It’s all about filtering out soot (thanks to the DPF) and breaking down NOx gases (with an SCR system) using a chemical reaction. These systems are constantly monitoring and adjusting to ensure your diesel runs efficiently.

How do I know if my diesel needs an emissions control upgrade?

If you’re noticing sluggish performance, poor fuel efficiency, or frequent regeneration cycles, it’s a sign your emissions control system might be due for a repair. A clogged DPF, insufficient NOx reduction, or other system issues can drag down your engine’s power and cost you more in fuel and repairs. At Willy’s Workshop, we’ll diagnose your system, and if an upgrade is needed, we’ll get you back on track with a solution that restores your diesel’s performance and keeps those emissions in check.

What does it mean when the emission control system light comes on?

If you’re noticing sluggish performance, poor fuel efficiency, or frequent regeneration cycles, it’s a sign your emissions control system might be due for an upgrade. A clogged DPF, inefficient NOx reduction, or other system issues can drag down your engine’s power and cost you more in fuel and repairs. At Willy’s Workshop, we’ll diagnose your system, and if an upgrade is needed, we’ll get you back on track with a solution that restores your diesel’s performance and keeps those emissions in check.

What causes a fault in the emission control system?

A fault in the emission control system is typically caused by:

Faulty Oxygen (O2) Sensor – Incorrect air-fuel mixture.
Bad Mass Airflow (MAF) Sensor – Affects fuel combustion.
Malfunctioning Catalytic Converter – Increases emissions.
Loose/Faulty Gas Cap – Causes fuel vapor leaks.
EGR Valve Issues – Impacts exhaust gas recirculation.
Vacuum Leaks – Leads to incorrect air-fuel ratios.
Dirty/Faulty Fuel Injectors – Causes poor combustion.
EVAP System Leak – Releases fuel vapors.
Bad MAP Sensor – Affects engine load regulation.
Failing ECM – Disrupts emissions control.

Still have questions?

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Articles & Resources

Looking for more info? Check out our articles and resources on Emissions Solutions or get in touch. Our team are on hand to answer your questions.

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Our Locations

Sunshine Coast

P: (07) 5619 7869 

E: sales@willysworkshop.com.au

12 Commerce Ave, Warana, 4575

Text us : 0485 885 957

Customer Service Opening Hours:

Monday to Friday – 7:00 AM to 5:00 PM

Brisbane

P: (07) 3377 3421

E: salesbris@willysworkshop.com.au

291 Clivedon Avenue, Oxley, 4075

Text us : 0485 885 957

Customer Service Opening Hours:

Monday to Friday – 7:00 AM to 5:00 PM

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