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ECU Remap and Chip Tuning Methods and Training

Alientech | Dimsport | Auto Tuner | CMD Flashtech | Magic Motorsport (MMS) | ECU Flashing Software & Tools

There are three ways of carrying out an ECU remap: via OBD (Onboard Diagnostics); bench programming using a specialist tool with ECU removed from the vehicle; and EPROM chip removal.


This is now the most common form of carrying out an ECU remap. The OBD port is located within one metre of the driver’s seat and allows for reading and writing of the Engine Control Unit.

Using a tuning tool such as KessV2, the original ECU calibration is read out by the dealer before being uploaded to the Quantum Files Team. Once the file has been modified and sent back, it is then programmed back into the ECU. Some OBD remaps require certain procedures for the file to be successfully programmed (such as switching the ignition on/off or ensuring that the seatbelts are connected) and it is always wise to ensure that the vehicle has a healthy battery.


Some ECUs are not safe to modify via OBD, so will need to be removed from the vehicle and physically connected to a specialist programming tool such as Alientech’s K-TAG. These conversions generally take a little longer than OBD tuning as some ECUs can be awkward to remove. However it is advisable to invest in a bench programmer as it means you will be able to cover most eventualities.


Having to actually remove the EPROM/EEPROM from an ECU in order to modify it is rare these days, but is still necessary on some older cars. It requires practice in carefully de-soldering the chip, reading and reprogramming it, and re-soldering to the PCB.


Quantum Tuning is your first source for car tuning service tools and remapping software, and we ship worldwide.

We sell only the best ECU Tuning Tools and ECU Remapping Software made by Alientech, and we sell all of these online. Please visit our Alientech sales site for your one-stop chip tuning shop for all your professional tuning needs.

Alientech products are of the highest quality and are known throughout the tuning and remapping industry worldwide for being an excellent and most reliable tuning brand.

Quantum Tuning’s innovative dealer plans are the first choice for file supply either as a full dealer or as a white label product. If you write your own files, then the range of Alientech products on offer also include master tools.


We are Alientech’s largest supplier of slave tools and their biggest distributor in Europe. For some reason, many other Alientech resellers make the claim to be their biggest, which we guess is just wishful thinking. If you have any doubts, feel free to verify the facts with Alientech.

The Alientech KessV2 is a great tuning tool for OBD tuning and is our preferred tool. With an existing range of over 6,000 different vehicles this tool is being continually developed. Our price for a KessV2 with car protocols, including 6 tuning files, is £1,700 + VAT.

You can buy the KessV2 cheaper from other suppliers, who will sell it to you at a subsidised rate to lock you in to their file supply. But beware… there is no such thing as a cheap tool, as when you pay less for the tool, you end up paying more for the map. Do the maths.


Whilst the KessV2 is a great tool for OBD programming, the fact is that to be able to cover the a comprehensive range of vehicles you will need to have the capability to programme a variety of ECUs on the bench. The type of common vehicles that need to be programmed with a K-TAG are: most VAG, Mercedes, BMW, etc from 2008. In addition you need J-Tag for all L200 and Nissan Navaras.

Bench jobs attract a higher revenue, typically £100 extra per job, as there is a potentially higher risk in removing and opening the ECU. However we offer a training course with every tool to help reduce that risk.

The basic K-TAG slave is priced from £1,367. This has limited capabilities, as to be the most effective and efficient you will also need a BDM frame and set of adaptors. We have put together an Advanced K-TAG package with everything to cover virtually all vehicles you need. This package can be bought outright for £3,410 plus VAT.


Our comprehensive one-to-one day’s training, worth £450, is an essential part of what we offer. Ask yourself the question: if a mysterious black box simply arrived in the post, would you be confident to go ahead and tune a vehicle?

K-Tag training is a day’s IMI certified course, also worth £450, for which we charge just £95. Held at our West London offices, situated near to Heathrow, you can be confident about opening and programming ECU’s once you have completed the course.