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Specialist ECU, TCU & Performance Tuning

Professional in-house tuning, servicing and diagnostics from our Horsham workshop using Autotuner and Alientech KESS3 for safe, reliable results.

  • ECU unlocks for selected 2022+ BMW, VW Group & Mercedes
  • TCU mapping for DSG, ZF and other autoboxes
  • Stage 1 / Stage 2 tuning and bespoke packages
  • DPF / EGR / AdBlue solutions where applicable
  • Vehicle servicing, DSG servicing & performance upgrades
  • OBD flash on-site • Bench ECU mapping available
Professional Workshop ECU & TCU Specialists Advanced Diagnostics
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Specialist Workshop Services | RPM Sussex
Specialist Workshop Services

Built around performance, diagnostics, and specialist workshop support

From ECU & TCU remapping to advanced diagnostics and Stage 2 performance upgrades, RPM Sussex offers workshop-based services tailored to BMW and VW Group vehicles.

ECU and TCU remapping equipment at RPM Sussex

ECU & TCU Remapping

Workshop-based engine and gearbox tuning for selected BMW and VW Group vehicles, including OBD and bench mapping where required.

Stage 1 from £240 OBD & Bench DSG / TCU Support BMW & VW Group
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Vehicle diagnostics and software investigation service

Diagnostics & Software Solutions

Fault diagnosis, coding, software investigation, and specialist support for warning lights, drivability issues, and platform-specific vehicle problems.

Fault Finding Coding Software Investigation Workshop Support
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Stage 2 performance upgrades and tuning at RPM Sussex

Performance Upgrades

Stage 2 package routes combining the right supporting hardware with a matching ECU calibration, tailored to your vehicle, current mods, and goals.

Stage 2 Packages Hardware + Software BMW & VW Group 0% Payment Assist
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Service Overview

From OBD and bench ECU remapping to diesel ECU solutions, performance upgrades and servicing — planned, installed and supported in-house.

BMW & VAG Specialists OBD & Bench Mapping 0% Instalments Transparent Pricing

ECU & TCU Remapping

Eco / Blend (Popular) / Performance calibrations written via OBD or bench (ECU out) as required — smooth, dependable gains tailored to your goal.

  • OBD & bench capability in-house
  • Pre-tune health check & backup
  • Stage 1 from £240
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Delete & Solutions

EGR / AdBlue / DPF ECU solutions to resolve persistent faults and limp-mode strategies. Supplied strictly for off-road/motorsport use.

  • OBD where supported; bench if required
  • Stop constant regens & warning lights
  • From £260 per system
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Performance Upgrades

Supply & fit — intercoolers, intakes, turbo inlets, downpipes and exhausts — matched to your map for reliable, repeatable performance.

  • Neat fitment & correct torque specs
  • Transparent parts & labour quotes
  • Book for a quote
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Car & DSG Servicing

Quality oils and filters, DSG gearbox servicing, fault scans and pre-tune checks to keep your car healthy before and after calibration.

  • Health check & diagnostics
  • DSG servicing available
  • Book online
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Choose Your Service
Select the service you’re interested in, whether that’s Stage 1 remapping, Stage 2, exhaust upgrades, servicing, diagnostics, or one of our specialist ECU solutions.

Add Your Vehicle & Contact Details
Enter your registration number, contact details, and a few notes about what you’d like done. The more detail you include, the easier it is for us to point you in the right direction and give accurate advice.

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Once we’ve reviewed your enquiry, we’ll get back to you with the best route for your vehicle, along with pricing or the next steps.

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Flexible Payment Plans

Manage your costs effortlessly with Payment Assist. Enjoy the ease of splitting payments into 3 equal monthly installments with zero interest.

  • ✔ No hidden fees
  • ✔ Quick & easy approval
  • ✔ Hassle-free payment process

Example Payment Plans

£240 3 x £80
£480 3 x £160
£900 3 x £300

Interested? Let us know and explore your finance options today!

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VOLKSWAGEN GOLF R ✅ Stage 1 ECU + DSG/TCU tune with R600 intake and R600 turbo inlet elbow fitted for improved flow and response. We also fitted new wing mirror covers and a carbon fibre steering wheel to finish it off 👌 📈 Performance increase : +65 BHP / +120 Nm ⚙️ DSG map to match — sharper shifts, improved drivability and torque handling.BMW 118d Stage 1 Remap | RPM Sussex BMW 118d in with us for a Stage 1 ECU calibration — a proper upgrade in drivability and performance. ✅ More power & torque ✅ Stronger mid-range pull (perfect for overtakes) ✅ Sharper throttle response ✅ Often improved MPG when driven sensibly Before calibration we carried out live data checks to make sure everything was operating as it should — helping reduce risk and catch obvious issues early.🚗💨 BMW 3 Series 320d – Blend Map Upgrade This 2016 BMW 3 Series came in for a blend map, focusing on smooth performance and improved efficiency — all applied safely via OBD. ✅ Blend ECU calibration ✅ +30 BHP / +40 Nm ✅ ~7–10% improved fuel economy* ✅ Smoother throttle & torque delivery No engine-related faults present and the car drove perfectly on the test drive. A great upgrade for everyday drivability without compromising reliability.🛠 VW Touran 1.6 TDI – EGR Delete + ECO Map 🛠 This Touran came in with EGR-related fault codes and drivability concerns caused by common EGR issues on the 1.6 TDI engines. Diagnostics confirmed active EGR intervention, so we carried out an EGR software delete alongside an ECO map focused on smoother delivery and improved efficiency. ✅ EGR system disabled in software ✅ Fault codes cleared ✅ ECO map applied for better MPG and drivability ✅ Road-tested with everything working as it should A great solution for long-term reliability and day-to-day efficiency.🛠 Range Rover Evoque 2.2 TD4 – EGR Delete 🛠 This Evoque came in with an intermittent EGR fault causing the engine management light to return. Diagnostics and live data showed unstable EGR behaviour at idle, consistent with failing EGR position feedback rather than a DPF or airflow issue. ✅ EGR software delete completed ✅ EML cleared ✅ Road-tested with no faults returning ✅ Smooth drivability restored A common issue on these engines, and a solid long-term solution to improve reliability and prevent repeat faults.🛠 VW Golf 1.6 TDI – EGR Delete 🛠 This Golf came in with EGR-related fault codes causing intermittent issues and poor reliability. After diagnostics, we carried out an EGR software delete, removing the problematic system and preventing further EGR-related faults. ✅ EGR disabled in software ✅ Fault codes suppressed ✅ Improved reliability & drivability A solid solution for common 1.6 TDI EGR issues caused by carbon build-up over time.