Knock correction
How much ignition the ECU is pulling. Sustained, high correction points to fuel quality, carbon build-up or excessive temperature.
BMW datalog analysis
The only way to know what an engine is really doing is to watch it while it works. You record a road datalog in the app, we read it, and we tell you plainly how close your car is running to its limits.
What we read in a datalog
Boost deviation
The gap between requested and actual boost. A persistent gap raises questions about leaks, the wastegate or a sensor.
Air-fuel ratio
Whether mixture holds its target under high load. Going lean is the most serious warning sign there is.
Intake air temperature
How output changes as things heat up — a direct measure of intercooler adequacy.
Torque limiter events
The moments the ECU limits itself. This is usually what explains a car that does not feel like the numbers suggest.
Fuel system headroom
Injector duty cycle and rail pressure. Critical if you are considering E85 or a higher stage.
Who is this for?
If you have just bought a used BMW and want to know its real condition, a datalog tells you a great deal long before a warning light does.
If you had the car remapped elsewhere and it feels somehow off, a datalog separates a calibration issue from a mechanical one.
If you are thinking about a remap, logging first is the sensible order: you fix an existing problem rather than papering over it with a calibration.
Datalogs are recorded from the Logger section of the MOSTUNED app and exported as CSV, which you send to us.
Datalog questions
Can I get this without buying a remap?
Yes, datalog analysis is offered as a standalone service.
How do I record a log?
In the app's Logger section you pick the channels to watch and hit record. We tell you in advance what kind of run to do.
Will a datalog definitively find a fault?
A datalog gives strong indicators but does not replace physical inspection. If the findings point to a mechanical check, we will say so clearly.
Related pages
- BMW remapping guide — why datalogs matter
- Remote flashing — how the app works
- E85 flex fuel tune — headroom check
Contact
Get in touch
WhatsApp: +90 547 470 40 40
Monday–Saturday 09:00–20:00 (UTC+3) · Remote service, wherever you are
Request a quote
Send your model, engine code, any hardware modifications and what you want out of the car; we will work out the right package together.