Business Details
22 Years
experience
Expert ECU Remapping & DPF Cleaning Services in Leicester
Established by professionals with over 50 years combined experience in vehicle engineering, J & B Computer Services specialises in advanced automotive solutions. Our mobile services bring cutting-edge technology directly to clients across the Midlands, offering ECU remapping, DPF regeneration, and hydrogen-based engine carbon cleaning. Utilising state-of-the-art equipment including the UK's most powerful 3250L/h carbon cleaning machines, we address performance issues caused by carbon buildup in diesel and petrol engines. Our comprehensive diagnostics identify root causes of DPF failures, ensuring lasting solutions rather than temporary fixes. With three fully insured technicians covering Leicester, Hinckley, and Burton-on-Trent, we combine technical expertise with flexible service delivery. Our commitment to quality is demonstrated through 30-day remap guarantees, lifetime software warranties, and transparent pricing without hidden fees. We serve both private and commercial clients, including fleet operators requiring maintenance solutions that minimise vehicle downtime. Our approach prioritises fuel efficiency improvements and emissions reduction while maintaining engine reliability through scientifically proven hydrogen cleaning processes.
Services
ECU Remapping
DPF Cleaning
Engine Carbon Cleaning
AdBlue Solutions
Vehicle Diagnostics
Turbo Maintenance
EGR Valve Cleaning
Fleet Servicing
MOT Emissions Help
Key Programming
Served areas
- Service areas we cover. Leicester, Leicestershire, Nottinghamshire, Warwickshire, Derbyshire, Northamptonshire, Staffordshire, Rutland.
- Melton Mowbray, Loughborough, Market Harborough, Wigston Magna, Ashby-de-la-Zouch, Hinckley, Lutterworth, Market Bosworth, Shepshed, Braunstone Town, Coalville, Earl Shilton, Market Bosworth, Oadby, Syston, Wigston, Enderby.Anstey, Arnesby, Ashby Magna, Aylestone, Barkby, Billesdon Coplow, Birstall, Blaby, Botcheston & Newtown Unthank, Bruntingthorpe, Cold Newton, Cossington, Countesthorpe, Ullesthorpe, Croft, Cropston, Dunton Bassett, Fleckney, Foxton, Gaddesby, Gaulby, Gilmorton, Glen Parva, Glenfield, Glooston, Great Glen, Groby, Gumley, Humberstone, Humberstone Garden City, Hungarton, Illston on the Hill, Keyham, Kibworth Beauchamp, Kibworth Harcourt, Kilby, Kimcote & Walton, Kirby Muxloe, Kirkby Mallory, Loseby, Narborough & Littlethorpe, Newton Harcourt, Newtown Linford, Peatling Magna, Potters Marston, Queniborough, Ratby, Rearsby, Rothley, Saddington, Scraptoft, Shangton, Shearsby, Skeffington, Smeeton Westerby, The Langtons, Theddingworth, Thrussington, Thurcaston, Thurlaston, Thurnby, Bushby Stoughton, Tilton-on-the-Hill, Welham, Whetstone, Wigston Magna, Willoughby Waterless,
Details
- Year established: 2004
- Employees: 1
Highlights and features
- All computer repairs are undertaken
- Home call out service
- Free advice just ask
Payment methods
- Cash
What people say
Excellent customer service
Professional and reliable
Noticeable fuel savings
Expert diagnostics
Convenient mobile service
Services
ECU Remapping
Our ECU remapping service optimises engine performance by modifying electronic control unit software. Using original manufacturer tools and 25+ years' calibration expertise, we increase power output by up to 40bhp while maintaining reliability. Each custom map undergoes dyno testing before application, with options for stage 1 and stage 2 modifications including DPF/EGR deletes. The process takes 2-3 hours at your location.
DPF Cleaning
Our mobile DPF cleaning service uses JLM professional fluids and hydrogen technology to remove carbon deposits. Starting from 70, we combine diagnostics with forced regeneration to address both symptoms and root causes. The process includes checking sensor functionality and advising on post-treatment driving requirements to maintain filter efficiency.
Engine Carbon Cleaning
Using hydrogen-based technology, our carbon cleaning service removes up to 85% of engine deposits in 35-60 minutes. The 3250L/h machine cleans intake systems, EGR valves, and exhaust components without dismantling. Clients typically see 10-15% fuel efficiency improvements, with benefits lasting 9,000-mile intervals.
Vehicle Diagnostics
Comprehensive diagnostics using latest software identify engine management issues. Starting at 40, our checks cover DPF sensor status, EGR functionality, and AdBlue system faults. We provide clear explanations of error codes and recommend appropriate remedial actions with cost estimates.
AdBlue Solutions
We resolve AdBlue system faults through software resets or component repairs. Services include NOx sensor diagnostics, dosing line maintenance, and SCR software calibration. Our mobile service addresses warning lights and power loss issues while maintaining emissions compliance.
People
John
Director & Lead Technician
With over 40 years in automotive engineering, John specialises in engine performance optimisation. He leads Leicester operations, combining technical expertise with customer-focused service delivery.
Michael
Senior Technician
Michael brings extensive diesel engine expertise to south Leicestershire. His 30+ years' experience focuses on complex diagnostics and emissions control systems maintenance.
Jason
Remapping Specialist
Jason covers Burton-on-Trent with specialist knowledge in ECU tuning. He has particular expertise in commercial vehicle performance optimisation and DPF solutions.
Questions
What areas do you cover?
We operate across Leicester, Leicestershire, and surrounding Midlands counties including Nottinghamshire, Warwickshire, and Staffordshire.
How long does carbon cleaning take?
Most passenger vehicles complete in 35-60 minutes using our standard machine, with larger engines requiring up to 90 minutes.
Do you work on commercial vehicles?
Yes, we service HGVs, buses, and plant machinery with our industrial-grade cleaning equipment.
Can you fix MOT emissions failures?
Our carbon cleaning services have successfully resolved over 95% of emissions-related MOT failures in test cases.
What payment methods do you accept?
We accept cash, card payments, and business invoicing arrangements for fleet operators.
Do you offer fleet discounts?
Yes, we provide volume discounts for multiple vehicle treatments booked simultaneously at the same location.
Reviews (3)
Gemma
Nov 05, 2016
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My PC was running so slow I was at my wits end. John came out and serviced it on the spot, removing viruses and programmes I no longer used but that were taking up valuable space. I'd like to thank J&B for their professionalism and excellent customer service. I'm one very satisfied customer.
Lucy Tankard
Nov 05, 2016
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I can highly recommend John at J&B Computer Services. He was thorough in fixing my laptop and getting it back to full speed. His charges were very competitive compared to other repairers. I would definitely use J&B again in the future and have already recommended him to friends. Keep up the excellent service John.....
Divyan Pabari
Nov 05, 2016
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John is very professional and knowledgable and has fixed my personal and work computers on many occasions when I have picked up viruses, bugs, etc. Also John services my computers at my shop every 12 months to ensure the software programs are up to date and the computers are running perfectly. I highly recommend J&B Computer Services.