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MasterTune will read the ECM information but will not upload or program the ECM. What is the problem?

April 26, 2017ECM mastertune problem program read upload

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MasterTune will read the ECM information but will not upload or program the ECM. What is the problem?

1 Answer

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The most common cause of this is an incompatible USB serial adaptor. Try a different adaptor, or use the one that TTS supplies.