The cause
With the values that prove it: requested, measured, gap.
Diag Expert
An engineer’s diagnosis, in 1 minute.
Paste the link to your KESS3 or Autotuner log, or upload whatever you have: scan tool export, photo, video, dyno chart. Diag Expert finds the cause and gives you the checks in order, with the expected values and the diagram. On any vehicle in your workshop, remapped or not.
Any vehicle, even one never remapped: 1 credit for 30 days, and no result, no credit. Free on your MFT Dev remaps during the after-sales period.
4.9 on Google · 8 reviewsCause found2.0 TDI · KESS3 log
Air leak after the turbo
Requested boost 2,300 mbar, measured 1,650 mbar
Checks, in order
Turbo → intercooler hose
Expected: holds 2 bar
Intercooler and clamps
Expected: loss < 0.1 bar in 1 min
Boost pressure sensor
Expected: 1,000 mbar ± 30, ignition on
Diagram
TurboLeakHoseIntercoolerIntake
1 minutefor the cause and the checks
30 daysone case per vehicle, all included
12 sourceslogs, scan tools, photos, video, dyno
All vehiclesremapped or not, every make
Step 1
Upload whatever you have
No special format needed: Diag Expert reads what your tool gives you.
Share links
Paste the log link: it is kept for 90 days, even if the share expires.
KESS3 linkAutotuner link
Scan tools
Exports, reports and logs, just as the tool produces them.
VCDSOBDelevenLaunch .x431TexaAutelBosch
Photos, video, PDF
A photo of the screen or a short video of the dashboard is enough.
PhotoVideoPDF
Dyno
The dyno sheet, even photographed: power and torque are read.
Dyno chartPhotographed sheet
Swipe to see all 4 sources
Fault codes, every formatP0299P204B-13SPN 3216 FMI 2P246316684 (VAG)read from a file or a photo, or typed in
Step 2
What you get
A result a mechanic reads in thirty seconds, and can show to the customer.
The checks, in order
Each check with its expected value: you fix it right the first time.
The diagram
The circuit involved, with the faulty part marked.
Readable curves
Engine speed and load on every graph, pinch to zoom, original overlaid.
Swipe
Customer reportWith your letterhead, in your language, with the curves and values: +1 credit, once per case.
E85 and performance tunes: fuel delivery limits are detected (pumps, injectors or adapted version).
Every kind of fault
Not just the engine
A guided assessment, question by question, for every system: a test before any part, never blind replacement.
EnginePower, smoke, misfires
GearboxShifting, slipping
BrakesABS, ESP, wear
ElectricsStarting, charging, network
Air conditioningCooling, pressure, leaks
ChassisSteering, suspension
Hybrid and electricWith the required qualification
AdBlue and emissionsSCR, DPF, EGR, sensors
Diag Expert · New
Prove the gain to your customer: before / after
Send the original log and dyno sheet with your request, then again after each version. Diag Expert files them, compares them and gives you a before / after report in your name for your customer.
RECLog · 3rd gear, full throttleOriginalV2
Engine speedrpm
1,1001,5502,0002,4502,9003,3503,8004,2504,7001,1001,5502,0002,4502,9003,3503,8004,2504,700
Boostbar
0.901.191.451.671.801.841.851.851.851.001.361.702.002.202.272.302.302.30
+0.45Rail pressurebar
6509101,1501,3401,4801,5701,6201,6401,6507009901,2501,4601,6201,7201,7801,7901,800
+150Airflowkg/h
210295380455520570600610620230330430525600655690700710
+90Before / afterExample
V2 gain over the original+34 hp · +74 Nm · +22%
| Measure | Original | V1 | V2 |
|---|---|---|---|
| Power (dyno)hp | 152 | 181 | 186 |
| Torque (dyno)Nm | 338 | 405 | 412 |
| Boost at full loadbar | 1.85 | 2.25 | 2.30 |
| Rail pressurebar | 1,650 | 1,800 | 1,800 |
Original
With the request: the KESS3 or Autotuner share link (even pasted in the comment) and a photo of the dyno sheet, read automatically.
After each version
A log and a dyno run after V1, V2… Each measure is filed by itself: Original, V1, V2.
Customer report
Gains and curves, original vs latest version, with your letterhead and in your language: 1 credit.
- Free on your remaps during the after-sales period
- Before / after report in your name: 1 credit
Dyno sheet coming later? Send the photo in the request chat with a word like “curve”, “log” or “dyno”. An original measure is a reference: it never asks you anything.
Open my accountTrust
Your workshop stays in charge
A test before any part
Every check has its expected value: nothing gets replaced on a hunch.
The workshop takes over
If the remap may be involved, your workshop takes the case back and tells you straight away.
Approved by an engineer
Verdicts are reviewed by the workshop’s engineers, who confirm or correct them.
Protected data
Plate and VIN never sent in clear; your measurements stay between you and your workshop.
Pricing
Simple and risk-free
MFT Dev customer garages
In your garage account, on every request and in the menu.
Your remapsFreeduring the after-sales period
Any other vehicle1 creditremapped or not, 30 days all included
Customer report+1 creditwith your letterhead
Unlimited€39 /monthor €390/year, up to 100 cases a month
- Never charged twice for the same vehicle within 30 days
- No result, no credit
White-label workshops
On by default for all your garages, in your colours.
Pay as you go€2 /casefree until 31/12/2026
Unlimited€99 /monthor €990/year
Garage subscription€39 /monthon your Stripe, 70% for you
Paid case1 creditthe credit is yours
Frequently asked questions
Does the vehicle need to have been remapped?
No. Diag Expert works on any vehicle in your workshop: stock, remapped by us or elsewhere. It is simply free on your MFT Dev remaps during the after-sales period; for any other vehicle, it is 1 credit for 30 days.
What can I send?
The share link of a KESS3 or Autotuner log, a scan tool export (VCDS, OBDeleven, Launch, Texa, Autel, Bosch), a photo, a short video, a PDF or a dyno sheet. Fault codes are read in every format.
How long does it take?
Usually one minute after the measurement is sent. If a measurement is missing, Diag Expert tells you exactly which one to redo and how.
How much does it cost?
Free on your MFT Dev remaps during the after-sales period. Otherwise 1 credit per vehicle for 30 days all included, or the €39-a-month subscription (up to 100 cases). No result, no credit.
What if the remap might be the cause?
Your workshop takes over directly and tells you straight away. Until it replies, don’t replace any parts.
Does it work on motorbikes, trucks and boats?
Yes, the protocols adapt to the vehicle: motorbike dyno, heavy trucks, marine. Faults outside the engine go through the guided assessment.
Can the garages on my white-label platform use it?
Yes: Diag Expert is on by default in every white-label Files Service, in your colours, and the credit for each case is yours.
A vehicle to diagnose, remapped or not?
Open your garage account: the first minute will tell you where to start.
