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DATA LOGGING

Data logging the vehicle for DTC’s and making a note of them before proceeding is essential.

Items to measure to make a good data log. Please use this as a template and also attach the log files you have recorded.


Petrol Data Logging

Engine Speed Airmass Injec<on Opening Time Lambda Specified Lambda Actual Inlet Air Temperature Exhaust Gas Temperature (EGT);(900/960 ) Boost Pressure Specified Boost Pressure Actual Wastegate dutycycle (VAG => N75) Igni<on Retarding Igni<on Cil. 1 Retarding Igni<on Cil. 2 Retarding Igni<on Cil. 3 Retarding Igni<on Cil. 4

Original max Value

Modified max Value


Diesel Data Logging

Engine Speed Airmass Injec<on Quan<ty Injec<on Opening Time Lambda Inlet Air Temperature Exhaust Gas Temperature (EGT);(850/900) Boost Pressure Specified Boost Pressure Actual Wastegate dutycycle (VAG => N75)

Tips & Tricks:

Original max Value

Modified max Value

When using VAG-COM with VAG models you have to select the “Turbo” button and the “UDS” button (this button is left from the “Turbo” button [But it isn’t always available on every car] ) after choosing the Value’s you like to log.

Left in the VAG-COM screen you can see the logging speed. This value should be at least 4.
If it isn’t you have to select less value’s and make a second log with the other value’s you would like to log.

The JF Automotive team
Meet the team

The team behind every job

Technicians, calibrators and the front desk, all in Maidstone. No call centre and no subcontracting - the person who books you in is the person you can ask about the job.

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A short email now and then: new vehicle support, parts deals, open days. Nothing daily.