What is Logger?
Logger is a software that allows users to read values from RAM via OBDII port. By using logger we can read and write to our laptop the values of boost, AFR, ignition angle, load, RPM, vehicle speed etc. Then we can use this saved log for tuning the engine or gearbox.
TH LOGGER
There are many loggers on the market but they are mostly slow and can’t provide enough data. That’s the reason why we wrote an advanced logger.
Now we are able to read any of 10000-20000 parameters at a very high frequency. It can work with REALTIME TUNING and helps us to make an optimal tuning for a short period of time.
WHY TH LOGGER IS FAST?
Logger works mostly over Can Bus. Each packet of messages that is transferred and received takes time. The more messages, the lower the frequency.
With compression, we don’t have to send as many messages. That’s how we can save time and make it faster.
VARIABLES
The biggest problem is getting variable offsets(addresses). It’s easy to read 20-100 variables by using Standard Parameter IDs (PIDs) and that’s how very popular OBDII scanner ELM327 works. PID is a number that refers to an offset in RAM. The numbers are always the same for every vehicle brand and model. And we can even disassemble any ECU firmware and get these offsets.
If we need more variables, we can use a diagnostic scanner for a specific vehicle brand (VCDS or ODIS for VAG, XENTRY for Mercedes-Benz etc.). The scanner uses up to 1000 manufacture PIDs. But even 1000 variables are often not enough.
To find more we wrote A2L Generator, that allows us to search offsets in two similar firmwares by signatures(similar parts of program code). This way any Antivirus software works.
With our advanced logger we are able to read almost every variable, so we know for sure what is going on with the engine and what we need to modify for the optimal tuning.
