Does anyone know what controls the scan tool "DVT time out" on E40 and E38 computers? When using it to find MBT it cuts out after anywhere from 10sec to 1 min which makes tuning a lot more time consuming when you need to start and stop all the time.

Is it something that is hard programmed into the ECU or is decided buy the scan tool? Is there a way around it at all?

Thanks.