Common-Rail Diesel Tuning Explained

a close up of a gas pump with a car in the background

Modern diesel engines are far more advanced than their predecessors, thanks to common-rail injection technology. But how does it actually work — and how can an ECU remap safely improve performance? In this guide, Leicester Remaps explains the science behind diesel tuning and what makes common-rail systems ideal for reliable power gains. What Is Common-Rail […]

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 […]

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 […]

Fuel Economy Remaps: Can Tuning Really Save You Money?

blue BMW coupe parked on the road during daytime

Can a Car Remap Really Save Fuel? It’s not just about power. Many drivers choose car remapping to make their engines more efficient — especially with rising fuel prices. At Leicester Remaps, we use the same professional tools and software as main dealers to improve both performance and economy in one safe tune. How Fuel […]

Will ECU Remapping Damage My Engine? The Truth About Reliability

water dew on silver Volkswagen car emblem

Does ECU Remapping Damage the Engine? This is one of the most common myths in car tuning. When done correctly, ECU remapping is completely safe for your engine. In fact, the same manufacturers often release multiple versions of the same car with different power outputs — achieved purely through software. Why the Word “Safe” Depends […]

Is Car Remapping Safe? What Drivers in Leicester Should Know Before Tuning

running black Porsche sedan

Is Car Remapping Safe? It’s one of the most common questions we hear from drivers across Leicester — is car remapping safe for my engine? The short answer: yes, when it’s done properly. A professional ECU tune refines the software that controls your fuel, boost, and timing, unlocking power that your car already has hidden […]

Mobile Remapping Near Me: Driveway Service vs Garage Visit

Understanding the Check Engine Light

What Is Mobile Remapping? Mobile remapping is ECU tuning carried out at your home or workplace instead of a garage. Our technicians bring professional tools such as Autotuner and KESS, connect to your car’s diagnostics port, and upload the new software on the spot. The service takes around an hour, and no hardware changes are […]

Pops and Bangs Remap Explained: Costs, Risks, and Software Options

The Rise of Vehicle Remapping in the UK

What Is a Pops and Bangs Remap? A pops and bangs remap is software added to the ECU that changes how fuel ignites in the exhaust system. The result is the crackles, burbles, and bangs you hear when lifting off the throttle. It’s a popular choice for petrol turbo cars, and some diesels, to add […]

Speed Limiter Removal Leicester: How It Works and What to Expect

All You Need to Know About Remapping

What Is Speed Limiter Removal? Many vans, fleet cars, and some personal vehicles come fitted with a factory speed limiter. It caps the maximum speed your vehicle can reach, often set between 56 mph and 70 mph. Speed limiter removal is software that reprograms the engine control unit (ECU) to take away this restriction. Drivers […]