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It is a software data logger and diagnostic tool, much like DataScan or Conzult, to be run on existing tunes. Really it is intended as a simple tool for easily logging and analyzing knock under real-world driving conditions, rather than for tuning on the dyno. However,  Nistune hardware boards will be supported in a future version which will allow for real-time tuning. I am working on a separate software product for doing more comprehensive tuning. 
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