Whilst at RWG Engineering in Pool, Redruth, we were asked to take a look at a heavily modified VW Transporter suffering from a mix of turbo, EGR, DPF, and remap issues. Judging by its colour, we suspect this van may have once had a previous life with a well-known breakdown company!
With 249,000 miles already under its belt and now on its third engine, this T5 had clearly had a tough working life.
On inspection, we found that the existing remap was far too aggressive, pushing excessive boost. The result? Overboost issues that were so severe they were blowing the welds off the aluminium turbo pipe — something we don’t see every day!
To resolve the problem, we carefully backed off the map to make the power delivery smoother and the boost more controlled. This not only improves reliability but should also stop the constant frustration of repairs for the owner.
We always enjoy seeing repeat customers, but we’d rather it be for upgrades and improvements, not for fixing unnecessary issues caused by poorly calibrated maps.
Why Choose Kernowsport for VW Transporter Tuning?
- Experienced with Transporter T5 and T6 ECU remapping
- Solutions for turbo, EGR, and DPF problems
- Covering Pool, Redruth, Camborne, and all of Cornwall
- Safer, smoother maps for reliability as well as performance
If your VW Transporter has been poorly tuned or is suffering from boost, EGR, or DPF problems, Kernowsport can put it right and keep your van running smoothly.














