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

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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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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Audi A3 1.6 TDI in Lanner near Redruth awaiting EGR delete.

Audi A3 1.6 TDI EGR Delete – Lanner, Near Redruth

This job was the second of three vehicles we attended in one day, a good example of how flexible our mobile service can be. We regularly work Saturdays, and with file processing available until early evening, we’re often able to fit in multiple jobs—especially during the longer summer days. £680 EGR Replacement vs Software Solution The owner of this Audi A3 1.6 TDI in Lanner, near Redruth, contacted us after being quoted £680 for a replacement EGR valve. Like many customers, he was unsure whether to replace the faulty component or explore a software-based solution. Once the options were explained, it became a straightforward decision. Rather than replacing an expensive part that is well known for failing again, we carried out a professional EGR delete in the ECU, permanently resolving the issue. Why EGR Deletes Are So Common on VW & Audi Diesels EGR faults are something we see every week, particularly on VW and Audi diesel engines. Over time, carbon buildup and mechanical wear cause: In most cases, a software EGR delete is all that’s required. Once mapped out, the EGR valve defaults to a closed position, and the ECU no longer attempts to operate it. The result is

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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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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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Audi A5 V6 undergoing EGR delete with professional ECU tuning equipment.

Audi A5 3.0D V6 Stage 1 Remap & EGR Delete – Four Lanes, Cornwall

At Kernowsport, we don’t see many Audi A5s, but today’s job in Four Lanes, Cornwall was a cracking example of the 3.0D V6 model. It was the second job on the estate this week—the previous one being a VW T5 Transporter—but this Audi was in beautiful condition with exceptionally low mileage for its year. If we were in the market ourselves, this would have been the perfect choice. Why the Audi Needed Attention The owner had gone to great lengths to find this vehicle but wanted it tuned for performance and reliability: With Audi diesels, this is usually a straightforward job. Most models are compatible with a simple OBD port connection, making it a quick and safe process. The Kernowsport Process Using professional diagnostic tools and ECU tuning software, we were able to: Within a short time, the Audi was ready for a test drive. The V6 engine responded beautifully, giving the owner a noticeable improvement in performance and drivability. Seeing that big smile after the test drive is exactly why we love our jobs at Kernowsport. Mobile ECU Remapping Across Cornwall Kernowsport provides mobile vehicle tuning and ECU remapping across Cornwall, including:Four Lanes, Camborne, Redruth, Hayle, Penzance, Truro, Helston,

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VW Transporter T6 BiTDI parked in Relubbus for EGR valve repair by Kernowsport.

VW Transporter T6 EGR Valve Repair in Relubbus, Cornwall

The first job of the day took us just down the road to Relubbus, a trip that brought back a few childhood memories—and gave us the chance to work on a truly lovely 2017 VW Transporter T6 BiTDI with just 40,000 miles on the clock. The owner was experiencing an EGR valve issue, and with an upcoming busy period ahead, wanted it resolved quickly and properly. That’s where Kernowsport stepped in. A Standout Transporter T6 in a Rare Specification We work on a lot of VW Transporters—often five or more per week—but this one was right up there with the best. This particular T6 came in a rare all-seat configuration with twin sliding doors, powered by the 204bhp BiTDI engine and paired with a 6-speed gearbox. Even in standard form, it’s an impressively quick and capable van—perfect for both work and family use. Quick, Effective EGR Diagnostics & Repair As expected with the Transporter platform, this was a straightforward and efficient job for us. We quickly diagnosed the EGR fault, resolved the issue, and ensured everything was operating as it should—no warning lights, no drivability problems, and no compromises. Reliable diagnostics and correct fixes are key on modern VW vans,

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BMW 1 Series diesel parked in Lanner near Redruth before remap by Kernowsport.

BMW 1 Series Diesel Remap, DPF & EGR Delete in Lanner, Near Redruth

We seem to have worked on a lot of BMW 1 Series diesels recently, and this visit to Lanner, near Redruth, was another great example of why they remain such a popular choice for tuning. The owner had already completed the physical DPF and EGR removal himself and called on Kernowsport to take care of the software side, along with a Stage 1 performance remap to bring everything together properly. An Early BMW 1 Series – And One of the Cleanest We’ve Seen This particular car was a 2004 model, making it one of the earliest BMW 1 Series diesels on the road. Despite its age, it was also one of the cleanest examples we’ve seen for the year—clearly well looked after and a real bargain for the owner. With the right tuning and software corrections, cars like this can continue to offer reliable, economical motoring for years to come. Why BMW 2.0D Engines Are Fantastic Value to Tune BMW’s 2.0D diesel engines are among the best “bang for buck” engines we work on here at Kernowsport. Depending on the year and specification, a Stage 1 remap can typically take these engines from: That means: It’s hard to find another

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Fiat Ducato 2.3D camper parked in Penryn during EGR repair and remap by Kernowsport.

Fiat Ducato Camper Remap & EGR Repair in Penryn, Cornwall

The first job of the day took us to Penryn to work on not one, but two Fiat vehicles for Lionel—starting with a well-kept Fiat Ducato camper fitted with the 2.3D 150bhp engine. Lionel had been experiencing persistent EGR system problems that several local garages had been unable to resolve. With an upcoming trip planned, he needed a reliable solution—and that’s where Kernowsport came in. EGR Problems Resolved & Camper Power Boosted We quickly diagnosed and resolved the EGR issues, restoring proper operation and eliminating the faults that had been causing trouble. While we were there, Lionel opted to enhance the driving experience with a performance remap. The result?The Ducato camper was transformed from 150bhp to just under 190bhp, delivering: Perfect for touring Cornwall—or heading much further afield. Why Battery Conditioning Matters During ECU Work Interestingly, this particular ECU took almost an hour and a half to read. While unusual, some ECUs simply take longer, and patience is part of doing the job correctly. This is exactly why we always use a CTEK battery conditioner during remapping. Maintaining stable voltage prevents interruptions during the read/write process—something you definitely want to avoid when working on modern ECUs. Fiat 500 Hybrid Remap

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Mercedes Vito after successful remap and DPF delete solution in Mount Hawke, Cornwall.

Mercedes Vito DPF Delete & Remap for Lockley Contracting in Mount Hawke

Today’s visit took us to Mount Hawke to help our friends at Lockley Contracting, who had a customer with a Mercedes Vito undergoing a DPF hardware delete. They asked Kernowsport to come in and complete the software corrections and add a reliable performance remap to finish the job properly. The Vito platform is one of the best vans on the market for tuning—smooth to drive, robust, and very responsive to a well-written map. From 114bhp to 130bhp – A Noticeable Boost This Vito began as a 114bhp model, but with some Kernowsport tuning magic, we safely increased it to around 130bhp, giving the owner: At the same time, we corrected the EGR and DPF fault codes that naturally occur following hardware removal. The result?A cleaner-running van, more power underfoot, and a much happier customer. Partner With Kernowsport – Tuning Support for Garages Across Cornwall This job is a great example of how Kernowsport works with garages throughout Cornwall.If you own a workshop and want a reliable, fast, and professional tuning partner, we’d love to hear from you. We offer: Kernowsport is rapidly becoming Cornwall’s number one tuner, known for dependable results and honest, affordable service. Need a Trusted Garage in

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VW Caddy Mk4 1.6D ex-British Gas van parked in Helston during KernowSport remap.

VW Caddy Mk4 1.6D Remap & EGR Delete in Helston – Plus Speed Limiter Removal

Anyone who knows KernowSport knows that we love VW Caddys—they’re some of the most rewarding vans to tune, and the results are always excellent.This week, we headed down to Helston to work on a tidy ex-British Gas VW Caddy Mk4, unusually fitted with the 1.6D engine. Almost every Mk4 Caddy we see comes with the 2.0D unit, so this was a nice change. Fresh from its previous owner, the van needed an EGR delete, and the new owner opted for one of our popular Blend remaps, designed to improve drivability and torque without making the van overly aggressive. His words:“Mostly so I don’t make myself late by driving too quickly!” Why We Love Working on Ex-British Gas Caddys These vans are usually: This one was no exception. Clean, tidy, and ideal for tuning work. With their simple layout and accessible engine bay, Caddys are always a pleasure to map, and they respond very well to both performance and blend remaps. Speed Limiter Removed – Helston Approved While we were there, we also dealt with the 70mph factory speed limiter—a common restriction on ex-fleet vans. We have several tools to handle limiter adjustments, including: For this job, Autel was closest to

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