Tuning-Check
FAQ
Short answers to what most people want to know first – and who is behind Tuning-Check.
01
Frequently asked questions
Click a question to open it. If yours is missing, we will answer it by email.
Can you tell if a car has been remapped?
Yes, from the ECU software. We compare the read-out with the factory software for your software number. The report shows whether it has been modified, which areas and by how much – and whether the limiters still take effect. We clarify beforehand whether we have the factory software for your software number.
Can tuning still be detected after the car has been returned to factory software?
The report states what is in the file at the time of the read-out. If the factory software has been reinstalled, earlier tuning can no longer be seen in the file.
How much does it cost to check if a car has been remapped?
For the question “modified or not”, the quick check (Level 1) for €130 is usually enough. Log analysis only, as a preliminary check, costs €90. Both prices incl. 19% VAT. If you send the removed ECU, reading it out and return shipping are added. All prices are listed under Process & prices.
Can I have it checked online, with an app or for free?
Online: yes. You upload the tuning file or log file in the enquiry form. You only send in the ECU if it has to be read out.
With an app: some Bluetooth adapters with a matching phone app can record a log file. We analyse it; we tell you in advance whether your device is sufficient. Log analysis only
The analysis is not free. The prices are fixed, and you know them before we start.
Can a garage tell if a car has been remapped?
A garage can read out the ECU with the right equipment. Whether the ECU software has been modified is shown by the comparison with the factory software for the software number – we do that. In practice, this means: your garage reads out the ECU and sends us the file, or removes it and sends it to us.
Is the report a formal expert assessment?
No. It is a technical findings report: it records what is in the software and provides the evidence. A formal assessment for a court is written by an expert witness. We are happy to work with them and supply them with the data.
In which language will I receive the report?
In your language. We also reply to enquiries in your language.
Does this also work from abroad?
Yes. You upload files and log files from anywhere in the world via the enquiry form; ECUs are sent to us by post or courier. See Three ways to reach us.
Do I need the owner’s consent?
Yes. We only read out an ECU with the consent of the vehicle’s owner. When buying a used vehicle, this means: the seller has to agree.
Will anything be changed on my vehicle?
No. We only read data. Everything on the ECU stays as it was. If the housing has to be opened for reading, we discuss this with you beforehand.
Will I notice while driving if limiters are missing?
Usually not. An engine without a temperature limiter drives just like one with it – until the day the limiter would have been needed. That is why it pays to look into the file before something happens.
How long does it take?
That depends mainly on whether we have the factory software matching yours, and on the level. We tell you how long it will take before we start.
What is log data, and how do I record it?
Log data consists of recordings of the values the ECU determines while driving – such as boost pressure, ignition timing, lambda and temperatures. It is recorded with a diagnostic tool or data logger of the kind workshops and tuners use. We tell you beforehand which values we need. You send us the file just like a read-out.
Two things are then also stated in the report: values from log data are values calculated by the ECU, not a measurement on a dyno. And we cannot vouch for where a recording you send us comes from – the findings apply to exactly this file.
Will the business that did the tuning find out?
Not from us. The report is sent only to you. What you do with it is up to you.
What happens to my file?
We keep the read-out, files and report for 24 months so that the report number can still be verified. The analysis is partly AI-assisted. Details are in the privacy policy.
Do you also check tuning files I have bought – privately or as a workshop?
Yes. This works best with the original read and the delivered file together. See Check a purchased tuning file.
Which ECUs can you check?
That depends on whether the ECU can be read and whether we have the factory software for the software number. Send us the ECU and software designations, and we will tell you beforehand.
What if my ECU cannot be read?
This happens. Not every ECU can be read. On some control units, tuning can prevent the ECU software from being read again later; for some ECUs there is no way to read them. If we do not succeed, we charge €30 for the attempt instead of the read-out price and send the ECU back. The remaining option is then a log file: with the software number, we compare the recording with the original file. Log analysis only
Does this also work for the gearbox?
Yes, if we receive the software of the gearbox ECU (TCU) – as a file, as a log file with the software number or with the removed ECU. We analyse all changes that the comparison with the original file shows. First the limiters, for example how much torque the gearbox may accept and whether the temperature limiters still take effect. Then the shifting behaviour, for example whether shift points have been changed and shift times shortened. If there is something specific you want to know, mention it in your enquiry – by arrangement, we look for it specifically. We clarify beforehand whether we have the original file for your software number.
02
Who is behind Tuning-Check?
Behind Tuning-Check is Maik Schneider, a master motor vehicle technician (Kfz-Technikermeister) with his own master-craftsman workshop in Frankfurt (Oder), Germany, entered in the register of crafts (Handwerksrolle).
He has been developing engine and gearbox software himself for many years. That is why we know where in the software changes are made – and that is why every report follows one rule: it names no business, judges none and only describes the file.
Why we do this
For some years now, we have been seeing more and more vehicles in our workshop with modified ECU software where nobody knows exactly what has been changed – often not even the keeper or the workshop that flashed the file. If something then happens, it is one person’s word against another’s.
From the outside, you cannot tell good software work from bad. That only changes when someone takes a look. That is exactly what we offer: we read what is in the file and write it down so that it can be understood. Anyone who does good work has nothing to fear from this – and anyone who buys knows what they are paying for.
On road approval: The report states what is in the ECU software. Whether a vehicle with this software is approved for use on public roads depends on the regulations of the country concerned and is decided by the authority responsible there. Modified engine or gearbox ECU software is not automatically approved without the inspection required there.
Enquiry
Question not covered here?
Write to us – we reply in your language.
or write directly to info@tuningcheck.de