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Professional deletes for DPF, EGR and CAT.

  • Software & fault code removal for faulty filters on diesel vehicles
  • Eliminates engine light problems & limp mode
  • Fast, efficient and convenient mobile service
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Whether it’s DPF, EGR or CAT, emission-reduction systems can eventually fail on diesel cars. For you, the result is constant problems with your engine warning light or limp mode being activated. Not to mention poor performance and a detrimental impact on your vehicle’s lifespan.

Thankfully, Project Remaps can help. Once your faulty filter system has been removed by a garage, we’ll reprogramme your ECU to eliminate check engine lights, as well as improving your fuel efficiency going forward. Best of all, we provide a mobile service so our team can come to you and complete the job at your home or office. We also offer an AdBlue Delete service.
egr delete
We can delete software and codes for a full spectrum of faulty filters, including DPF, EGR and CAT, from a wide range of diesel vehicles.
dpf delete
As ECU programming experts, we’re best placed to reprogramme your car after removal to ensure optimal performance.
cat delete
We’ll reprogramme your engine following DPF, EGR or CAT removal at your home or office, and work around your schedule with a time of your choice.
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happy clients
Having helped more than 5,000 vehicle owners boost their driving performance, you know you’re in good hands.

Get a quote for your DIESEL SYSTEM DELETES

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Latest Reviews
  • "Absolutely excellent job on my Audi TT, it's a completely different car. Thanks for a superb job of work. Top rated 5 stars."
    Bill Gibbons on Facebook
  • "Just had my E400 done, very happy with the results. 
    Fantastic service and a genuinely nice guy!"
    Ben Robson on Facebook
  • "Just want to thank Joe for comming out to my place and doing stage one remapping on my van. Very very happy with the result. Very professional service and fast response. Thank you."
    Mark Kovago on Facebook
  • "Excellent service and our motorhome runs like a dream. 
    Thank you so much."
    Rachel Stowell on Facebook
  • "Had my Mercedes c180 mapped by Joe on Saturday, cracking fella and the difference in my car is unbelievable, thanks Joe"
    Mick O'shaughnessy on Facebook
  • Great company to use with friendly staff! Definitely recommend using them! Thanks Joe! A+
    Stuart Elliott on Facebook
  • Top guy great value and proper good job look no further for your remapping needs 😃
    Ian Michael Slack on Facebook
diesel system deletes yorkshire


In order to meet emissions standards, most diesel vehicles are fitted with a diesel particulate filter (DPF), catalytic converter (CAT) or exhaust gas recirculation (EGR). That’s fine when they’re fully functional, but all too often these systems fail.

Filter removal starts by physically removing or unplugging the part in question, depending on what type of system is installed. Once that has been done by a garage, we’ll reprogramme your vehicle’s ECU to essentially delete the previous system from its memory. This is slightly simpler for EGR deletes as the software delete permanently closes the valve from the inside, meaning no blanking plates are necessary.

Related fault codes can be permanently erased from the ECU memory, preventing EML lights further down the line. So, reprogramming will remedy your check engine light and make sure it doesn’t come on in future.

The process is usually completed within 1-2 hours, which is made even more convenient by our mobile technicians. Simply choose a date, time and location, and we’ll be there to get your diesel vehicle back to its best.

Case Studies

DPF, EGR, CAT & AdBlue removal FAQ's

Read answers to some of the questions we are most frequently asked.


We are fully trained to remove or deactivate a range of filter types from diesel vehicles – including diesel particulate filter (DPF), catalytic converter (CAT) and exhaust gas recirculation (EGR).


At Project Remaps, we’ll always be honest and upfront about the legalities of DPF, CAT, EGR and AdBlue delete. In some cases, removing filters will put you in breach of the Road Vehicles Regulations. While our professional, experienced team is working on your behalf, we must remind drivers that they are advising us to delete systems at their own risk.


We understand that diesel vehicles come in all shapes and sizes. Thankfully, our team is fully equipped to work on thousands of makes and models, from cars, vans and motorhomes to HGVs and lorries.
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