By submitting a file, booking a service, or requesting any ECU / TCU software modification from PRO ECU TUNE, you automatically acknowledge and agree to the following terms and conditions:

​

GENERAL TERMS

1. I am the legal owner of the vehicle presented to PRO ECU TUNE.

2. I have been informed of the modifications and services to be carried out and I authorise PRO ECU TUNE to proceed.

3. PRO ECU TUNE may perform a diagnostic check before starting any work and reserves the right to refuse to perform modifications if mechanical or software issues are detected.

4. If the ECU / TCU has been previously modified by another tuner or third party, PRO ECU TUNE may refuse to work over the existing software. In this case, PRO ECU TUNE may provide a stock (original) file from the manufacturer’s database for a fee of £20.

5. If previous modifications have hidden or masked existing faults, those faults may reappear once the ECU / TCU is returned to stock. I accept full responsibility for diagnosing and repairing these faults.

6. If the vehicle's ECU / TCU has previously had its immobiliser (IMMO) disabled (IMMO-OFF) by another party without my knowledge or without this being disclosed to PRO ECU TUNE, restoring the ECU / TCU to its original (stock) software may result in immobiliser-related faults or a non-start condition.

Where technically possible, PRO ECU TUNE may offer to carry out an IMMO-OFF service or another suitable solution to restore vehicle operation. Such work is not included within the original service and will be charged separately at a price agreed before any additional work is carried out.

PRO ECU TUNE does not guarantee that an IMMO-OFF solution is available or technically possible for every ECU / TCU. If no suitable solution exists or the vehicle remains immobilised as a result of a previously undisclosed or unknown IMMO-OFF modification, PRO ECU TUNE accepts no responsibility or liability for the resulting non-start condition, repair costs, recovery costs, replacement parts, or any associated losses.

7. Where a Virtual Read (VR) is used, the tuning file is obtained from a database rather than by directly reading the existing ECU / TCU software. During programming, the existing ECU / TCU software will be overwritten. Once overwritten, any previous ECU / TCU software modifications will not be recoverable.

8. If the ECU / TCU must be physically opened and remapped in BOOT mode, PRO ECU TUNE will reseal it to the best of their ability, but a 100% factory-level seal cannot always be guaranteed. PRO ECU TUNE will not be liable for any future damage caused by water or moisture entering the ECU / TCU after remapping.

If BOOT mode access is required, an additional fee between £60 and £120 will apply, depending on the ECU / TCU design and the level of difficulty involved. The applicable charge will be agreed before the work is carried out.

9. Some modifications are intended strictly for off-road, motorsport, or track use only.

10. I authorise PRO ECU TUNE to overwrite my ECU / TCU with modified files.

11. All modified and original files will be securely stored by PRO ECU TUNE for a minimum of 12 calendar months. After this period, files may be permanently deleted without notice. While PRO ECU TUNE will make reasonable efforts to retain files for longer where possible, long-term storage is not guaranteed.

12. If I request to return the ECU / TCU to its stock configuration after the remap, PRO ECU TUNE reserves the right to charge a fee for this service.

13. All power and torque gains quoted or shown on the website: “https://www.proecutune.com/tuning-specs” are estimates based on prior testing and experience. Actual results depend on the vehicle’s condition, weather, and fuel quality.

Unless specifically stated otherwise, quoted figures are not guaranteed dyno results.

14. Fuel economy improvements are average expectations and vary due to factors such as driving style, tyre pressure, fuel grade, temperature, and altitude. PRO ECU TUNE cannot be held responsible for lower-than-expected MPG results.

15. I understand that ECU / TCU remapping alters the vehicle from its factory calibration and may place additional demand on engine, transmission and drivetrain components.

I choose to have my vehicle remapped entirely at my own risk. PRO ECU TUNE does not provide any warranty on the vehicle, engine, transmission or other mechanical components.

16. Remapping may expose or accelerate pre-existing wear, weakness or mechanical issues within the engine, transmission, clutch or drivetrain. PRO ECU TUNE is not responsible for failures resulting from pre-existing conditions, normal wear and tear, inadequate maintenance or components unable to tolerate the increased performance. No refund will be provided where a failure results from any of these circumstances.

17. In the unlikely event of ECU / TCU failure during the remapping process caused by external circumstances (e.g., power outage, voltage spike, corrupted communication, vehicle electrical faults, undisclosed aftermarket immobilisers or security systems (including, but not limited to: Ghost Immobiliser, CAN-bus immobilisers, tracker-based immobilisers, or any other non-factory security device capable of interfering with ECU / TCU communication or programming), previously damaged ECU / TCU, ECU / TCU that have been previously modified or tuned by other parties, or ECU / TCU that have been incorrectly written or accessed with other tuning tools), PRO ECU TUNE shall not be held responsible or liable for any associated repair or replacement costs.
I confirm that I have informed PRO ECU TUNE of any aftermarket immobiliser or security system fitted to the vehicle. Failure to disclose such systems shall be deemed acceptance of all risks arising from their interference with the programming process. If an undisclosed aftermarket immobiliser or security device causes communication failure, programming interruption, or ECU / TCU corruption ("bricking"), PRO ECU TUNE accepts no responsibility or liability for any resulting damage, repair costs, replacement ECU / TCU, recovery costs, or any associated losses.

PRO ECU TUNE will make reasonable efforts to assist in resolving the situation. This may include helping to source a suitable replacement ECU / TCU, assisting with ordering the correct unit, and performing the necessary software adaptation required for the replacement ECU / TCU to function with the vehicle.

I agree that any costs related to replacement ECU / TCU, parts, shipping, or third-party services will remain my responsibility. Where possible, PRO ECU TUNE may carry out the necessary software adaptation for the replacement ECU / TCU without additional labour charge, provided that no external costs are incurred by PRO ECU TUNE.

I understand that resolving such situations may take time depending on parts availability and delivery times. I agree to remain reasonable and cooperative during this process, and I acknowledge that the vehicle may remain with PRO ECU TUNE or be collected and returned once the replacement ECU / TCU becomes available. The process may take several working days, typically up to one week.

18. If a modified file is suspected to be faulty, PRO ECU TUNE will review and, if confirmed faulty, will supply a corrected version at no extra charge. PRO ECU TUNE alone will determine whether a file is faulty; third-party assessments are not accepted.

19. Where trim, covers or other components must be removed to access the ECU / TCU or OBD port, PRO ECU TUNE will exercise reasonable care. PRO ECU TUNE is not responsible for damage resulting from pre-existing deterioration, corrosion, previously damaged components or brittle clips and plastics that fail during reasonable removal procedures.

20. Difficult access to the ECU / TCU (subject to on-site assessment and agreement) or Removing an ECU / TCU security cage (to access the ECU / TCU in BENCH / BOOT mode) incurs a fee of £60.

21. If the vehicle is under manufacturer or dealer warranty, it is my responsibility to check whether a remap will void the warranty. PRO ECU TUNE will not be held liable for any loss of warranty.

22. To the best of my knowledge, the vehicle is free of any pre-existing mechanical issues that may interfere with the remapping process. PRO ECU TUNE carries out Pre-Tuning Health Checks (test drive, visual inspection and full diagnostic scanning) before commencing work, but this doesn’t always show every fault in the vehicle. It is my responsibility to disclose any such issues prior to commencement of work.

23. For vehicles with automatic transmissions, PRO ECU TUNE will perform a diagnostic check on the TCU but accepts no responsibility for any gearbox or clutch-related issues that occur after the remap. I understand that manual clutch slip or gearbox wear may be more noticeable following a performance increase. It is my responsibility to ensure the transmission has been serviced according to the recommendations of the gearbox manufacturer (not the dealership) and is in fully working order.

24. PRO ECU TUNE strongly recommends that I test drive the vehicle after the remap is complete and report any immediately apparent concerns before leaving. If I decline or am unable to perform the test drive with the PRO ECU TUNE agent present, PRO ECU TUNE will not be responsible for issues found later. If a follow-up visit is required, I agree to pay £60 / hour labour.

25. In rare cases, particularly on some vehicles from the VAG group, an ECU / TCU remap may result in the loss of certain ECU / TCU codings such as Cruise Control or Start/Stop, especially where these features have been retrofitted or where the ECU / TCU has been replaced and is not the original unit fitted to the vehicle from the factory. The likelihood of this occurring is very low (estimated around 1–2%). PRO ECU TUNE does not provide ECU / TCU coding services and accepts no responsibility for any loss of such codings following a remap. Furthermore, PRO ECU TUNE will not be liable for any costs incurred if I choose to have these codings reinstated by a third party after the remap.

26. All payments must be made immediately after service completion and / or test drive. The vehicle and keys will not be released until full payment is received, unless otherwise agreed in writing.

​​​

EMISSIONS, LEGAL RESPONSIBILITY & COMPLIANCE​

27. Any service involving the removal, deactivation or modification of an emissions-control system, including DPF, EGR, CAT, SCR / AdBlue and GPF / PPF systems, is offered by PRO ECU TUNE only for vehicles intended exclusively for legitimate non-road applications, such as off-road, motorsport or closed-circuit use.

28. PRO ECU TUNE reserves the right to refuse any emissions-related modification where there are reasonable grounds to believe that the vehicle is intended to be used on public roads following the modification. A customer declaration of off-road or motorsport use does not oblige PRO ECU TUNE to carry out the requested work.

29. I understand that removing, disabling or modifying emissions-control equipment originally fitted to a vehicle may make that vehicle unlawful for use on public roads and may result in MOT failure, penalties or other enforcement action under applicable UK legislation.

30. I confirm that any emissions-related modification requested from PRO ECU TUNE is for a legitimate non-road application and that I do not intend to use the vehicle on public roads while the relevant emissions-control system remains removed, disabled or otherwise non-compliant.

31. I understand that PRO ECU TUNE does not authorise, encourage or approve the use on public roads of a vehicle that has been modified in a manner that makes it non-compliant with applicable emissions or roadworthiness requirements.

32. Where an emissions-related modification leaves the vehicle unsuitable or unlawful for public-road use, I am responsible for arranging appropriate transportation from PRO ECU TUNE, such as a recovery vehicle or trailer, and I must not drive the vehicle away on public roads.

33. I understand that emissions-control systems originally fitted to the vehicle, including the Catalytic Converter (CAT), Diesel Particulate Filter (DPF), Exhaust Gas Recirculation (EGR), Gasoline / Petrol Particulate Filter (GPF / PPF) and Selective Catalytic Reduction (SCR / AdBlue) system, may be subject to legal, emissions and MOT requirements and must remain compliant where the vehicle is used on public roads.

34. I understand that an emissions-related software modification does not remove any legal requirement applicable to the vehicle or make an otherwise non-compliant vehicle lawful for use on public roads.

35. I accept responsibility for ensuring that the vehicle is used only in accordance with applicable law following any emissions-related modification and that it is not subsequently used on public roads while in a non-compliant condition.

36. PRO ECU TUNE shall not be responsible for penalties, MOT failures or enforcement action arising from the customer's subsequent use of the vehicle contrary to these terms or applicable law. Nothing in these Terms & Conditions excludes or limits any liability that cannot lawfully be excluded or limited.

​

ECU / TCU DUPLICATION, ECU / TCU REPLACEMENT and FLOODED ECU / TCU

37. In cases of ECU / TCU duplication, cloning, or replacement, the following terms apply:

a) ECU / TCU Condition Assessment:
If an ECU / TCU is duplicated or cloned, PRO ECU TUNE, the customer, or a third party may inspect the original ECU / TCU to determine whether it is faulty. If this assessment is performed by the customer or a third party, PRO ECU TUNE is not responsible for the accuracy of their diagnosis. Should the issue persist after duplication due to an incorrect assessment, the full service fee remains payable and no refund shall be due.

b) Customer-Supplied Replacement ECU / TCU:
If I (the customer) provide a replacement ECU / TCU, I confirm that it is free from physical damage, fully functional, and compatible with my vehicle.
If the supplied ECU / TCU proves to be faulty, incorrect, or incompatible, I accept full responsibility and agree to pay a £60 service fee for time and handling.
PRO ECU TUNE will not be held liable for non-start, DTC errors, or malfunctions caused by an incorrect or damaged customer-supplied ECU / TCU.

c) ECU / TCU Supplied by PRO ECU TUNE:
If PRO ECU TUNE provides the replacement ECU / TCU, it will be supplied in working condition and compatible to the best of their knowledge.
If an ECU / TCU supplied by PRO ECU TUNE is found to be incorrect, incompatible, or faulty, PRO ECU TUNE will handle the return and refund at no cost to me and will not charge any service fee.
PRO ECU TUNE does not offer a warranty on ECU / TCU and shall not be responsible for future electronic or mechanical failures related to the duplication procedure.

d) Flooded / Water-Damaged ECU / TCU:
If the original ECU / TCU is water or fuel-damaged (“flooded ECU / TCU”) and data cannot be recovered, duplication is impossible.
In this case, an IMMO-OFF service may be required to allow vehicle start-up.
If the replacement ECU / TCU (supplied by the customer) is faulty, wrong, or incompatible, or if the car fails to start due to incompatibility, the full service fee remains payable.
PRO ECU TUNE is not responsible for future issues caused by damaged or incompatible ECU / TCU supplied by the customer.

e) Refunds & Disputes:
If the service cannot be completed due to an ECU / TCU being faulty or incompatible (and it was supplied by the customer), no refund will be issued.
If PRO ECU TUNE supplied the wrong or faulty ECU / TCU, PRO ECU TUNE will replace or refund at no cost to the customer.
Any disputes or refund requests will be handled strictly under these written terms.

​

INSURANCE DISCLOSURE

38. I understand that performance modifications such as ECU / TCU remapping may need to be disclosed to my insurance provider under UK insurance law.

39. It is my responsibility to notify my insurer if required by my policy.

40. PRO ECU TUNE will not be held liable for any invalidated or voided insurance claims resulting from failure to disclose vehicle modifications.

​

ADDITIONAL PROVISIONS

41. Depending on the make and / or model of your vehicle, certain emission solutions may require specific plugs or sensors to be disconnected. PRO ECU TUNE will disconnect these only if easily accessible. If they are not, I must perform this task myself as advised. Reconnecting them in the future may cause fault codes or warning lights for which PRO ECU TUNE accepts no responsibility.

42. All quoted prices for emission-related services cover ECU software modification only and do not include any hardware removal, blanking plates, or physical installations.

43. Any prices quoted verbally over the phone are valid only on the day they are given and only if the booking has been secured by paying the booking fee by 7:00 PM on the same day.

Any prices quoted in writing are valid for a period of one (1) calendar month from the date of quotation. After the calendar month has elapsed, all quotes expire and a new price quotation will be required, which may be different from the original one.

To keep the quoted price, the work must be carried out within that one-month period, not just discussed or planned.

44. Any verbal statements that contradict this document are invalid unless confirmed in writing by PRO ECU TUNE.​​​​​

45. PRO ECU TUNE reserves the right to modify these terms and conditions at any time and without notice.

​

If you do not agree with these terms and conditions, please do not proceed with the service, booking, or file submission.

​

Last updated: 4 September 2026

​