By adjusting timing on a flash tune you'll be able to force the DME to target very aggressive timing and ride the knock sensors. The stock DME with the piggyback only will not allow for that to occur. In cases like this, the flash tune with additional aggressive timing will https://bmwecuvalidation68901.suomiblog.com/new-step-by-step-map-for-hyundai-ecu-tuning-software-45632282