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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
Stage 2 Parts

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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Get a Quote or Check Compatibility

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
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  • ✔ 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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Stage 1 remap carried out on this Fiat 500L. The customer was looking for a bit more power and improved drivability, so we applied a Stage 1 software solution to suit the vehicle. A nice upgrade, giving it better response and a stronger pull while keeping it smooth for everyday driving.Stage 1 remap and service carried out on this Fiat. The customer was looking for more power and improved performance, so we provided a Stage 1 software solution to suit the vehicle. While the car was with us, we also carried out an oil and filter change to give it a fresh start and make sure everything was ready to go.Nürburgring for a track day — what an experience. An absolutely unreal place and genuinely one of the best tracks in the world. The speed, the elevation changes, the length of the circuit and how much commitment it takes makes it completely different to anything else. The E92 M3 track car was brilliant. Plenty of grip, great balance, strong braking and enough speed to really enjoy the circuit properly. It felt right at home around the Ring. Weather was spot on as well, which made the whole experience even better. Clear track, good conditions, and just an amazing overall experience. Definitely one to remember.Stage 1 remap carried out on this Scirocco TDI. The customer was looking for improved performance and better drivability, so we carried out a Stage 1 software upgrade. A nice increase in power and torque, giving the car stronger pull, better throttle response and a much more enjoyable drive overall.AdBlue software solution carried out on this Citroën. The customer was having ongoing AdBlue-related issues, so this was completed via OBD with no ECU removal required. Once the software process was carried out, we completed our checks and got everything sorted. A clean job completed and another AdBlue fault dealt with.Vauxhall Combo in for an AdBlue software solution. The customer had previously had an AdBlue issue repaired, but unfortunately the fault returned around two months later and started causing problems again. On this one, the ECU needed to be removed for bench work. Once the ECU was out, we were able to carry out the required software process, refit everything and return the vehicle to the customer. A clean job completed and another AdBlue-related issue dealt with.