It’s always a good day when one job turns into four — and that’s exactly what happened when we visited a local company in Porthtowan to carry out some ECU tuning work.
Originally, we were there for a single booking, but once the other staff saw what we were doing, three more decided to get their vehicles remapped on the spot! One of those was this Mercedes Vito Diesel, which was in need of both diagnostics and a Stage 1 performance map.
Diagnosing Electrical Faults Before the Tune
Before starting the remap, we carried out a full vehicle diagnostic check using our advanced tools. The van had recently had a radio installed, and that installation had unfortunately shorted something out — resulting in a whopping 47 fault codes on the ECU!
Using our specialist diagnostic systems, we worked through the issues, reducing those 47 codes down to just six. The likely culprits were a blown fuse or a fault in the body control module, both of which we were able to sort out quickly.
Our vehicle diagnostics service is designed to identify and resolve problems like this efficiently, saving customers from costly main dealer visits.
Stage 1 Performance Map for Cornwall’s Roads
With the diagnostics complete, it was time to move on to the Stage 1 performance remap. This upgrade transforms the Mercedes Vito’s power delivery — improving throttle response, mid-range torque, and overall drivability.
On Cornwall’s steep and winding roads, especially around Porthtowan, extra torque and smoother acceleration make a world of difference. The owner was thrilled with how much more responsive and powerful the van felt afterwards.
If you want to experience the same gains, check out our ECU remapping service available throughout Cornwall, including Hayle, Truro, Redruth, and beyond.
Two Down, Two to Go
After finishing the Mercedes Vito, it was straight on to the next two vehicles — all at the same site! Days like this remind us how much people appreciate the flexibility of Kernowsport’s mobile remapping and diagnostics service.
We can come to your home, business, or work site anywhere in Cornwall and carry out professional tuning, DPF cleaning, and AdBlue solutions with minimal downtime.
🚗 Related Kernowsport Services
At Kernowsport, we specialise in mobile ECU tuning, diagnostics, and performance upgrades across Cornwall — from Hayle to Truro, Newquay, and Penzance.
Explore our most popular services:
- 💨 ECU Remapping Cornwall
- ⚙️ Vehicle Diagnostics
- 🧴 AdBlue Delete & Repair
- 🔧 DPF Cleaning & DPF Delete
- 🧩 EGR Delete Services
Whether you’re looking to unlock more power, improve fuel efficiency, or solve a tricky electrical fault, Kernowsport has you covered.
📞 Contact us today to book your mobile remap or diagnostic visit anywhere in Cornwall.











