What we do

At SW Remapping and Diagnostic in Malmesbury, we offer professional ECU remapping, performance tuning, and emissions solutions. As a friendly family-run business, we tailor our services to keep your vehicle running at its best, with prices starting from £249.

Performance & eco remapping

Unlock your vehicle's full potential with our custom power maps (Stage 1 & Stage 2) for increased BHP and torque, improved throttle response, and refined gearbox tuning. Looking to save at the pumps? Our eco maps deliver proven 10–20% MPG gains.

DPF, EGR & AdBlue solutions

Tired of recurring warning lights and limp mode? We provide comprehensive software solutions including EGR delete, DPF/FAP delete, and AdBlue delete to resolve complex emissions system faults efficiently and reliably.

Sensor & component deletes

We offer specialised software modifications including Lambda / O2 delete, swirl flap removal, MAF delete, exhaust flap removal, stop-start disable, active grille shutter (AGS) removal, and error code (DTC) removal.

Custom features & fixes

From solving warm-cranking issues with our VAG hot start fix and removing VMAX speed limiters to adding popcorn/hardcut limiters and pops & bangs (at customer's own risk). Contact us on 07510 234719.

(WhatsApp available) to book.