Does Removing the DPF or EGR Break Your MOT? (2025 Guide)

a car driving down a street under a cloudy sky

If you’ve ever considered a DPF delete or EGR delete, you’ve probably asked the same question: will it fail the MOT? The rules have tightened over the years, and in 2025, it’s more important than ever to know exactly where you stand. What the MOT Test Checks in 2025 The MOT test doesn’t just check […]

How I Diagnosed & Fixed Recurring DPF Regen Failures

A diesel particulate filter in the exhaust system in a car on a lift in a car workshop, seen from be

When a customer from Leicester called us about their diesel car going into limp mode every few days, the cause was obvious — the DPF regeneration process kept failing. This real-world case shows how proper diagnostics and ECU calibration fixed the issue permanently without removing the DPF. How the Problem Started The driver noticed the […]

Can You Delete EGR Without Touching the DPF?

blue coupe beside gray house

Many drivers contact Leicester Remaps asking the same question — can you delete the EGR valve but keep the DPF working? On paper it sounds simple, but the two systems talk to each other constantly. Here’s what you need to know before making that change. How the EGR and DPF Systems Work Together The EGR […]

DPF Regulations 2025: What Leicester Drivers Need to Know

DPF Solutions Explained

DPF Regulations 2025: What Leicester Drivers Need to Know From 2025, diesel particulate filter (DPF) rules tighten across the UK. For drivers in Leicester and Leicestershire, this means stricter MOT checks and bigger fines for non-functioning filters. Whether you drive a van in Wigston, a commuter diesel from Loughborough, or a fleet vehicle in Hinckley, […]

DPF Delete Leicester: MOT Rules, Costs, and Real Results

Understanding the Check Engine Light

What Is a DPF Delete? Diesel cars and vans built after 2009 are fitted with a Diesel Particulate Filter (DPF). It traps soot from the exhaust to cut emissions. A DPF delete is software that disables the filter inside the engine control unit (ECU). The physical filter can also be removed to stop it blocking […]