After being “returned to stock” the contents of the (supposedly stock) ECM were used as a base tune for EFILive. These failures occurred after the ECM’s were “returned to stock” using a box tuner. The next three cases highlight a problem that many of you will encounter when you tune Cummins controllers. We are confident this particular customer’s issue was not due to the remnants of a box tuner that was “returned to stock”. The ECM was 100% stock and as yet we are unable to explain how the file became corrupt. EFILive tracked both ECM failures down to the same corrupt file being flashed into the ECM. Unfortunately for one customer this was the second time an ECM flash had failed. Due to these failures occurring on or around the time we released a software update, we initially thought the failures may have been caused by that recent update, however further investigation revealed that the timing of the failures was just a coincidence. Over the last week four unrecoverable 6.7L ECM flash failures occurred after being programmed with EFILive.
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