Blocked DPF? Loss of power? Failed emissions? Our specialist cleaning restores up to 100% of your filter's flow — saving you £1,000s versus replacement. Cars, vans, trucks & fleets welcome.
From passenger cars to HGV fleets — we use state-of-the-art equipment and proven processes to bring your engine back to its best.
Full ultrasonic & pneumatic cleaning of diesel particulate filters. Removes soot and ash, restores flow and clears warning lights — no expensive replacement needed.
Advanced hydrogen carbon cleaning decokes valves, injectors, turbos and combustion chambers. Smoother running, better throttle response, lower emissions.
Professional EGR valve, inlet manifold and swirl flap degreasing to cure rough idle, smoke and limp mode caused by carbon build-up.
Heavy-duty cleaning for LCVs, HGVs and plant. Minimise downtime with priority scheduling and trade rates for fleets and garages.
Full system scan with live data — soot load, differential pressure and regen history — so you only ever pay for what you need.
Safe, controlled forced DPF regeneration with before/after flow verification and a road test to confirm the fix.
A new DPF from a dealer can cost £1,000–£2,500 fitted. Professional cleaning with SJM typically costs under £200 — with 95–100% of original performance restored.
Average flow restoration across 1,500+ cleans
Four steps from warning light to a fully restored engine.
We read fault codes, soot load and live data to confirm the DPF or carbon is the true cause — no guesswork.
You get a fixed price before any work starts. No surprises, no hidden extras.
Ultrasonic DPF cleaning and/or hydrogen carbon cleaning by experienced technicians.
We flow-test, reset the system and road test so you drive away with proof it's fixed.
Rated 4.9 out of 5 from 104 reviews.
"Van went into limp mode two days before a job. SJM cleaned the DPF the same day — power fully back and it sailed through the MOT. Absolute lifesavers."
"Dealer quoted me £1,800 for a new DPF. SJM cleaned mine for a fraction of that and showed me the before/after flow readings. Honest, professional bunch."
"Carbon cleaning made a noticeable difference straight away — smoother idle, better mpg. Wish I'd done it years ago. Highly recommended."
Common signs are a DPF warning light on the dash, loss of power (limp mode), increased fuel use, excessive smoke and failed MOT emissions. A diagnostic scan confirms soot load.
Most vehicles are completed the same day — typically within 3–4 hours including before/after diagnostics and a road test.
In the majority of cases yes. Professionally cleaned filters restore 95–100% of original flow, saving you £1,000+ compared to a replacement unit.
Yes. Our hydrogen carbon cleaning is non-invasive, chemical-free and safe for petrol, diesel and hybrid engines, turbos and DPF systems.
Yes — we work with taxi firms, delivery fleets, hauliers and garages. Contact us for trade pricing and scheduled maintenance plans.
Based in Luton, we serve customers and fleets across Bedfordshire and Hertfordshire — drop-in or collection/delivery available.
Book your free diagnostic today and save £1,000s on DPF replacement.
📞 Call 07481 909381Call, message or fill in the form — we'll get back to you within the hour during opening times.
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