Kernowsport Diagnostics & Tuning – Viezu-Approved Mobile ECU Remapping Services in Hayle, Cornwall

Kernowsport carrying out AdBlue delete on Range Rover Evoque.

Range Rover Evoque 2.0d AdBlue Delete – Penzance, Cornwall

Our first job of the day took us down to Alverton, Penzance, to carry out an AdBlue delete on this 2017 Range Rover Evoque 2.0 diesel—a vehicle we’re becoming increasingly familiar with at Kernowsport. We’ve now completed numerous Evoque AdBlue solutions, and an interesting pattern has emerged. Most of the vehicles we see fall into the 2016–2017 model years, suggesting either early teething issues with emissions technology or simply that these systems are now reaching the age where failures become common. A Common AdBlue Problem on Evoques AdBlue faults on these vehicles typically result in: Rather than replacing expensive AdBlue components, many owners choose a software-based solution, allowing them to keep their vehicle on the road without ongoing issues. You can read more about our approach on the AdBlue Solutions page. OBD Programming with Voltage Support From a technical standpoint, these Evoques are a straightforward OBD programming job, with relatively quick read and write times. However, one consistent issue we see is a weak factory battery, which can cause voltage drop during ECU programming. To ensure a safe and reliable write, we always connect a battery conditioner, maintaining stable voltage throughout the process—something that’s essential when working on modern Land

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Ford Transit camper after blend remap by Kernowsport.

Ford Transit 2.0 Diesel Camper Remap – Hayle, Cornwall

This local job kept us close to home in Hayle, working on a Ford Transit high-top camper fitted with the 2.0 litre diesel engine—and yes, the much-discussed wet belt variant. The good news?This particular Transit had covered just 44,000 miles and had been meticulously maintained, with no mechanical issues to report. The only thing holding it back was a factory speed limiter, which the owner was keen to remove. Choosing the Right Remap for a Camper Van Rather than going straight for maximum power, the owner opted for our Blend remap option. This is a popular choice for camper and leisure vehicles, as it offers: While Ford Transits can easily exceed 200 bhp with a full stage one remap, this camper was tuned to around 150 bhp, perfectly matched to its usage and long-term reliability goals. You can learn more about our tuning options on the ECU Remapping page. Future-Proofed for More Power One of the advantages of working with Kernowsport is flexibility. Should the owner ever want more performance in the future, this Transit has plenty in reserve: While we often recommend stage one tuning, we recognise that every customer has different priorities—from economy-focused campers to fully loaded work

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Vauxhall Corsa 1.2 diesel at Lockley Contracting in Mount Hawke.”

Vauxhall Corsa 1.3 Diesel DPF Delete – Mount Hawke, Porthtowan

Another productive day working with our trade partners at Lockley Contracting in Mount Hawke, just outside Porthtowan. We regularly support independent garages across Cornwall, providing reliable ECU software solutions they can trust—and this job was a perfect example. Blocked DPF on a Vauxhall Corsa 1.3 Diesel Their customer’s Vauxhall Corsa 1.3 diesel had a blocked DPF, causing drivability issues and warning lights. As is often the case, the physical side of the work was handled by Tom and Ollie at Lockley Contracting, who then called Kernowsport in to take care of the software side of the DPF delete. Where appropriate, we also: Because the pricing is the same, most customers choose to take advantage of the performance and reliability benefits while we’re there. Clear, Simple Pricing – No Surprises One thing that sets Kernowsport apart is our straightforward ECU pricing structure. Unlike many tuning companies, we’re happy to: It’s a win-win: improved reliability, better driveability, and more value for the vehicle owner. Learn more about our approach on the DPF & EGR Solutions page. Bench Mode ECU – Done the Right Way This Corsa runs a Bosch EDC17C69 ECU, which is bench mode only. While that sounds daunting, the good

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Alfa Romeo Stelvio 2.0 Turbo parked in Wendron near Helston.

Alfa Romeo Stelvio 2.0 Turbo Remap – Wendron, Helston

Today’s job took us right into the heart of rural Cornwall, out to Wendron near Helston—one of those locations where mobile tuning really comes into its own. We don’t see many Alfa Romeos here in Cornwall, but the owner of this 2019 Alfa Romeo Stelvio was a lifelong Alfa enthusiast and had owned several over the years. When you meet owners like this, you know the car matters. A Serious Performance Upgrade This Stelvio was the 2.0 Turbo petrol model, producing an already respectable 197bhp from the factory. However, once we’d completed the remap, the final figures were nothing short of impressive: For a 2.0-litre petrol engine in a mid-size SUV, that level of performance is genuinely remarkable. Bench ECU Remapping – The Right Tool for the Job Unlike many vehicles we work on, this Stelvio cannot be accessed via the OBD port due to a factory security module. In these cases, the correct and safest approach is a bench remap. That involves: Fortunately, Alfa Romeo made the ECU easy to access, so aside from the Cornish rain, this was a straightforward and controlled job. Learn more about our approach on the ECU Remapping Services page. Why Specialist Tools &

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2010 Honda Accord 2.0 diesel in Carharrack near Lanner.

Honda Accord 2.0 Diesel ECU Diagnostic – Carharrack, Lanner

This last-minute call-out took us to Carharrack near Lanner to diagnose a 2010 Honda Accord 2.0 Diesel that wasn’t behaving as it should. The owner reported that the vehicle had previously been remapped and was now suffering clutch slip in the higher gears—a classic symptom that can point to either poor calibration or an underlying mechanical issue. ECU Bench Read for Accurate Diagnosis Normally, if a customer wants a remap adjustment or software update, we would work via the OBD port. However, to properly assess what had been done in the past, this Accord required a full ECU bench read. A bench read allows us to: We sent the file to our trusted calibration partners at Viezu for analysis. The Real Cause: Mechanical, Not Software Interestingly, the existing remap itself was not badly written. However, the data clearly showed that: This is an important point—and one we’re always upfront about at Kernowsport. Software cannot fix worn mechanical components; it can only mask the symptoms temporarily. A Sensible, Honest Solution Rather than pushing more power or attempting to hide the issue, we: This bought the owner valuable time—allowing them to continue using the car while planning and budgeting for a clutch

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Ford Mondeo diesel parked in Padstow North Cornwall for DPF delete.

Ford Mondeo DPF Delete & Remap – Padstow, North Cornwall

This job took us up to Padstow on the North Coast of Cornwall and was a little more unusual than most of the DPF work we carry out. A local mechanic had correctly diagnosed DPF issues on this 2010 Ford Mondeo diesel and suggested a DPF delete as the most cost-effective long-term solution. The owner contacted Kernowsport to take care of the ECU software side of the work. Software-Only DPF Deletes – Honest Advice Matters What made this job slightly different is that the owner initially opted for a software-only DPF delete, without physically removing the diesel particulate filter. Typically, a proper DPF delete involves two key stages: While we were perfectly happy to carry out the software work, we clearly explained that leaving the DPF physically in place would eventually lead to blockage, as exhaust soot would still accumulate over time. At Kernowsport, we don’t tell customers what they must do. Instead, we provide clear, honest information, allowing you to make an informed decision based on your budget, usage, and plans for the vehicle. You’re the customer, after all. DPF Delete Completed & Mondeo Back on Form After discussing the options, the DPF was fully removed, and we carried

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Audi A5 2.0 TDI in black at Smiley Pistons workshop in Cornwall.

Audi A5 2.0 TDI DPF, EGR Delete & Stage 1 Remap

Today’s first job saw us working on this excellent Audi A5 2.0 TDI, originally from Mousehole, which was booked in at our partner garage Smiley Pistons for a DPF and EGR delete, along with a Stage 1 performance remap. Smiley Pistons certainly attract Audi owners, and over the past few months we’ve completed multiple Audi A5 remaps through their workshop—always a pleasure to work on such well-engineered cars. Low-Mileage Audi A5 in Excellent Condition This particular A5 was a low-mileage example, finished in classic black and in superb condition throughout. Vehicles like this are ideal candidates for software optimisation, especially when emissions-related issues start to appear. DPF faults are common on the Audi 2.0 TDI, particularly on vehicles that see short journeys or mixed driving. Rather than repeatedly repairing components, many owners choose a DPF and EGR software solution, paired with a performance upgrade to enhance drivability. Performance Gains & Safe ECU Programming As expected, the Audi responded very well to tuning, with the 2.0 TDI engine typically achieving around 200 BHP, depending on variant and factory output. Alongside improved power, owners also notice stronger mid-range torque and smoother power delivery. This A5 was completed via a secure OBD connection,

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Peugeot Boxer L1 H1 van in Camborne with AdBlue countdown warning.

Peugeot Boxer AdBlue Solution in Camborne

This job took place on a blustery Thursday in Camborne, just ahead of an incoming storm—making for a wet and windy working environment, but nothing out of the ordinary for mobile tuning in Cornwall. The vehicle in question was an unusual L1 H1 Peugeot Boxer, fitted with the 2.0D EcoBlue engine and, unsurprisingly, suffering from an AdBlue countdown warning. With work to do and downtime not an option, the owner needed the issue resolved quickly and reliably. Fast, On-Site AdBlue Resolution We were able to drop in on the way back to Hayle, fitting the job in without disruption to the customer’s schedule. Thanks to our professional tooling, this was a straightforward OBD programming job, completed in around one hour. The work carried out included:✔ AdBlue system reset and software correction✔ Removal of countdown and no-start risk✔ Stage 1 performance remap for improved drivability The additional performance upgrade gives these vans better low-end torque, making daily work and motorway driving far more comfortable. Keeping Working Vans Working At Kernowsport, we understand that a van off the road means lost income. That’s why we prioritise fast response times, mobile service, and reliable results, especially for trades and commercial customers. This Peugeot

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VW Golf running fault-free after DPF and EGR delete with stage 1 remap.

VW Golf 2.0 TDI DPF & EGR Delete in Camborne

The first proper job of the new year took us to Camborne, where we were called out to resolve issues on a VW Golf 2.0 TDI that had been left in limp mode with an engine management light following a DPF delete over the holiday period. The physical work had already been done, but as is often the case, the software side hadn’t been completed, leaving the car restricted and undriveable. More Than Just a DPF Issue On inspection, it quickly became clear that this Golf also had an EGR blanking plate fitted, meaning the ECU still expected emissions components that were no longer present. This is a common scenario—and exactly where professional ECU calibration is essential. Without the correct software updates, fault codes, limp mode and warning lights are unavoidable. Prepared for Any Situation – Even Snow and Flat Batteries Thankfully, all Kernowsport vehicles are fully equipped for on-site work. This one needed a little extra care, as it was also suffering from: Using our CTEK battery conditioner, we stabilised the voltage and safely carried out a full OBD ECU write, applying:✔ DPF delete software✔ EGR delete software✔ Stage 1 performance remap Voltage stability is critical during ECU programming,

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Mercedes Vito diesel undergoing ECU remap by Kernowsport in Camborne.

Trade Partner Remapping at Smiley Pistons, Troon

At Kernowsport, we place huge value on our relationships with trusted local garages, and we’re always pleased to work alongside experienced teams who care about doing the job properly. This visit took us to Smiley Pistons in Troon, near Camborne, where we’ve completed a number of successful tuning and emissions jobs over time. When garages come back to us repeatedly—and even entrust us with their own vehicles—we see that as the strongest recommendation possible. BMW 1 Series Remap… and Then Another Van The original booking was a Stage 1 performance remap on a BMW 1 Series, but while we were on site, we were also asked to remap Smiley Pistons’ own Mercedes Vito diesel. Mercedes Vito vans are an excellent platform for tuning. With a Stage 1 remap, they consistently deliver impressive results—often pushing well beyond 200 BHP, transforming them into genuinely quick and highly usable work vehicles. DPF & EGR Software Deletes for Reliability As is often the case with trade work, performance wasn’t the only goal. We also carried out DPF and EGR deletes at ECU level, improving:✔ Long-term reliability✔ Throttle response✔ Fuel efficiency✔ Reduced risk of repeat fault codes This approach is particularly popular with garages and

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Ford Ranger 2.2TD in Helston with DPF software fault being resolved.

Ford Ranger DPF Software Fix in Helston

At Kernowsport, we regularly support main dealers and independent garages when vehicles fall outside their tooling capabilities or present unusual software issues. This time, we were called to Helston to assist with a Ford Ranger 2.2TD that had developed DPF-related fault codes following a routine dealer software update. When Dealer Updates Clash with Previous Modifications Unbeknown to the dealership, this Ranger had previously undergone a DPF delete. When Ford’s latest software update was applied, it reintroduced emissions checks—triggering fault codes and illuminating the engine management light. The owner was left with two options: Unsurprisingly, they opted for the more cost-effective software solution. Professional OBD Programming with the Right Equipment Using our Alientech KESS 3, we carried out a safe and controlled OBD ECU write, ensuring the vehicle’s software correctly reflected its current configuration. This job also marked the first proper outing of our fully equipped VW Caddy, allowing us to put our CTEK battery conditioner to work during live programming—maintaining perfect voltage stability throughout the process. Reliable power management is essential during ECU work, and it’s one of the many small details that separates professional remapping from risky shortcuts. Back on the Road – Fault-Free and Running Right Despite a

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Fiat Ducato 2.3 campervan in Porthleven before performance remap.

Fiat Ducato Camper Remap in Porthleven

Another Fiat Ducato camper remap for Kernowsport, this time in Porthleven, just a short hop from our base in Hayle—and conveniently close to one of our favourite coffee spots at Origin. Any excuse! This 2.3-litre Fiat Ducato camper belonged to a lovely couple visiting Cornwall from Wales, spending the New Year exploring the county. After the long, slow drive down, they decided the van needed more usable power and better driveability—especially for hills and motorway cruising. Not All Remaps Are Created Equal We carried out a full ECU read using our Alientech KESS 3, before sending the original file to our trusted file partners at VIEZU for analysis and calibration. What we discovered was unexpected. Despite the owners being unhappy with the performance, the vehicle had already been remapped previously. On closer inspection, the existing map was missing several critical elements, meaning the engine was never delivering its full potential. This is, unfortunately, more common than many owners realise. Unlocking the True Potential with a Proper Calibration Thanks to VIEZU’s experience as the UK’s most established tuning provider, the file was completely rewritten and optimised correctly for this engine. Once applied, the difference was immediate:✔ Stronger mid-range torque✔ Improved throttle

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